在上面已经讲过如何训练了https://blog.csdn.net/u013066730/article/details/103720215
那么需要将eval_cell.py中的加 ########################################的内容进行修改，具体请看下面的代码。
主要就是修改输入的文件夹，然后修改解析输入的代码。
from data import COCODetection, get_label_map, MEANS, COLORS
from yolact import Yolact
from utils.augmentations import BaseTransform, FastBaseTransform, Resize
from utils.functions import MovingAverage, ProgressBar
from layers.box_utils import jaccard, center_size, mask_iou
from utils import timer
from utils.functions import SavePath
from layers.output_utils import postprocess, undo_image_transformation
import pycocotools
from data import cfg, set_cfg, set_dataset
import numpy as np
import torch
import torch.backends.cudnn as cudnn
from torch.autograd import Variable
import argparse
import time
import random
import cProfile
import pickle
import json
import os
from collections import defaultdict
from pathlib import Path
from collections import OrderedDict
from PIL import Image
import matplotlib.pyplot as plt
import cv2
def str2bool(v):
if v.lower() in ('yes', 'true', 't', 'y', '1'):
return True
elif v.lower() in ('no', 'false', 'f', 'n', '0'):
return False
else:
raise argparse.ArgumentTypeError('Boolean value expected.')
def parse_args(argv=None):
parser = argparse.ArgumentParser(
description='YOLACT COCO Evaluation')
parser.add_argument('--trained_model',
default='weights/yolact_base_277_5000.pth', type=str,
help='Trained state_dict file path to open. If "interrupt", this will open the interrupt file.')
parser.add_argument('--top_k', default=15, type=int,
help='Further restrict the number of predictions to parse')
parser.add_argument('--cuda', default=True, type=str2bool,
help='Use cuda to evaulate model')
parser.add_argument('--fast_nms', default=True, type=str2bool,
help='Whether to use a faster, but not entirely correct version of NMS.')
parser.add_argument('--cross_class_nms', default=False, type=str2bool,
help='Whether compute NMS cross-class or per-class.')
parser.add_argument('--display_masks', default=True, type=str2bool,
help='Whether or not to display masks over bounding boxes')
parser.add_argument('--display_bboxes', default=True, type=str2bool,
help='Whether or not to display bboxes around masks')
parser.add_argument('--display_text', default=True, type=str2bool,
help='Whether or not to display text (class [score])')
parser.add_argument('--display_scores', default=True, type=str2bool,
help='Whether or not to display scores in addition to classes')
parser.add_argument('--display', dest='display', action='store_true',
help='Display qualitative results instead of quantitative ones.')
parser.add_argument('--shuffle', dest='shuffle', action='store_true',
help='Shuffles the images when displaying them. Doesn\'t have much of an effect when display is off though.')
parser.add_argument('--ap_data_file', default='results/ap_data.pkl', type=str,
help='In quantitative mode, the file to save detections before calculating mAP.')
parser.add_argument('--resume', dest='resume', action='store_true',
help='If display not set, this resumes mAP calculations from the ap_data_file.')
parser.add_argument('--max_images', default=-1, type=int,
help='The maximum number of images from the dataset to consider. Use -1 for all.')
parser.add_argument('--output_coco_json', dest='output_coco_json', action='store_true',
help='If display is not set, instead of processing IoU values, this just dumps detections into the coco json file.')
parser.add_argument('--bbox_det_file', default='results/bbox_detections.json', type=str,
help='The output file for coco bbox results if --coco_results is set.')
parser.add_argument('--mask_det_file', default='results/mask_detections.json', type=str,
help='The output file for coco mask results if --coco_results is set.')
parser.add_argument('--config', default="yolact_base_cell_config",
help='The config object to use.')
parser.add_argument('--output_web_json', dest='output_web_json', action='store_true',
help='If display is not set, instead of processing IoU values, this dumps detections for usage with the detections viewer web thingy.')
parser.add_argument('--web_det_path', default='web/dets/', type=str,
help='If output_web_json is set, this is the path to dump detections into.')
parser.add_argument('--no_bar', dest='no_bar', action='store_true',
help='Do not output the status bar. This is useful for when piping to a file.')
parser.add_argument('--display_lincomb', default=False, type=str2bool,
help='If the config uses lincomb masks, output a visualization of how those masks are created.')
parser.add_argument('--benchmark', default=False, dest='benchmark', action='store_true',
help='Equivalent to running display mode but without displaying an image.')
parser.add_argument('--no_sort', default=False, dest='no_sort', action='store_true',
help='Do not sort images by hashed image ID.')
parser.add_argument('--seed', default=None, type=int,
help='The seed to pass into random.seed. Note: this is only really for the shuffle and does not (I think) affect cuda stuff.')
parser.add_argument('--mask_proto_debug', default=False, dest='mask_proto_debug', action='store_true',
help='Outputs stuff for scripts/compute_mask.py.')
parser.add_argument('--no_crop', default=False, dest='crop', action='store_false',
help='Do not crop output masks with the predicted bounding box.')
parser.add_argument('--image', default=None, type=str,
help='A path to an image to use for display.')
parser.add_argument('--images', default="F:patch/labelme_process/pic_complete_ai::E:/yolact-master/results", type=str,
help='An input folder of images and output folder to save detected images. Should be in the format input->output.')
# parser.add_argument('--images', default=None, type=str,
# help='An input folder of images and output folder to save detected images. Should be in the format input->output.')
parser.add_argument('--video', default=None, type=str,
help='A path to a video to evaluate on. Passing in a number will use that index webcam.')
parser.add_argument('--video_multiframe', default=1, type=int,
help='The number of frames to evaluate in parallel to make videos play at higher fps.')
parser.add_argument('--score_threshold', default=0.15, type=float,
help='Detections with a score under this threshold will not be considered. This currently only works in display mode.')
parser.add_argument('--dataset', default=None, type=str,
help='If specified, override the dataset specified in the config with this one (example: coco2017_dataset).')
parser.add_argument('--detect', default=False, dest='detect', action='store_true',
help='Don\'t evauluate the mask branch at all and only do object detection. This only works for --display and --benchmark.')
parser.add_argument('--display_fps', default=False, dest='display_fps', action='store_true',
help='When displaying / saving video, draw the FPS on the frame')
parser.add_argument('--emulate_playback', default=False, dest='emulate_playback', action='store_true',
help='When saving a video, emulate the framerate that you\'d get running in real-time mode.')
parser.set_defaults(no_bar=False, display=False, resume=False, output_coco_json=False, output_web_json=False,
shuffle=False,
benchmark=False, no_sort=False, no_hash=False, mask_proto_debug=False, crop=True, detect=False,
display_fps=False,
emulate_playback=False)
global args
args = parser.parse_args(argv)
if args.output_web_json:
args.output_coco_json = True
if args.seed is not None:
random.seed(args.seed)
iou_thresholds = [x / 100 for x in range(50, 100, 5)]
coco_cats = {} # Call prep_coco_cats to fill this
coco_cats_inv = {}
color_cache = defaultdict(lambda: {})
def prep_display(dets_out, img, h, w, undo_transform=True, class_color=False, mask_alpha=0.45, fps_str=''):
"""
Note: If undo_transform=False then im_h and im_w are allowed to be None.
"""
if undo_transform:
img_numpy = undo_image_transformation(img, w, h)
img_gpu = torch.Tensor(img_numpy).cuda()
else:
img_gpu = img / 255.0
h, w, _ = img.shape
with timer.env('Postprocess'):
save = cfg.rescore_bbox
cfg.rescore_bbox = True
t = postprocess(dets_out, w, h, visualize_lincomb=args.display_lincomb,
crop_masks=args.crop,
score_threshold=args.score_threshold)
cfg.rescore_bbox = save
with timer.env('Copy'):
idx = t[1].argsort(0, descending=True)[:args.top_k]
if cfg.eval_mask_branch:
# Masks are drawn on the GPU, so don't copy
masks = t[3][idx]
classes, scores, boxes = [x[idx].cpu().numpy() for x in t[:3]]
num_dets_to_consider = min(args.top_k, classes.shape[0])
for j in range(num_dets_to_consider):
if scores[j] < args.score_threshold:
num_dets_to_consider = j
break
# Quick and dirty lambda for selecting the color for a particular index
# Also keeps track of a per-gpu color cache for maximum speed
def get_color(j, on_gpu=None):
global color_cache
color_idx = (classes[j] * 5 if class_color else j * 5) % len(COLORS)
if on_gpu is not None and color_idx in color_cache[on_gpu]:
return color_cache[on_gpu][color_idx]
else:
color = COLORS[color_idx]
if not undo_transform:
# The image might come in as RGB or BRG, depending
color = (color[2], color[1], color[0])
if on_gpu is not None:
color = torch.Tensor(color).to(on_gpu).float() / 255.
color_cache[on_gpu][color_idx] = color
return color
# First, draw the masks on the GPU where we can do it really fast
# Beware: very fast but possibly unintelligible mask-drawing code ahead
# I wish I had access to OpenGL or Vulkan but alas, I guess Pytorch tensor operations will have to suffice
if args.display_masks and cfg.eval_mask_branch and num_dets_to_consider > 0:
# After this, mask is of size [num_dets, h, w, 1]
masks = masks[:num_dets_to_consider, :, :, None]
# Prepare the RGB images for each mask given their color (size [num_dets, h, w, 1])
colors = torch.cat(
[get_color(j, on_gpu=img_gpu.device.index).view(1, 1, 1, 3) for j in range(num_dets_to_consider)], dim=0)
masks_color = masks.repeat(1, 1, 1, 3) * colors * mask_alpha
# This is 1 everywhere except for 1-mask_alpha where the mask is
inv_alph_masks = masks * (-mask_alpha) + 1
# I did the math for this on pen and paper. This whole block should be equivalent to:
# for j in range(num_dets_to_consider):
# img_gpu = img_gpu * inv_alph_masks[j] + masks_color[j]
masks_color_summand = masks_color[0]
if num_dets_to_consider > 1:
inv_alph_cumul = inv_alph_masks[:(num_dets_to_consider - 1)].cumprod(dim=0)
masks_color_cumul = masks_color[1:] * inv_alph_cumul
masks_color_summand += masks_color_cumul.sum(dim=0)
img_gpu = img_gpu * inv_alph_masks.prod(dim=0) + masks_color_summand
if args.display_fps:
# Draw the box for the fps on the GPU
font_face = cv2.FONT_HERSHEY_DUPLEX
font_scale = 0.6
font_thickness = 1
text_w, text_h = cv2.getTextSize(fps_str, font_face, font_scale, font_thickness)[0]
img_gpu[0:text_h + 8, 0:text_w + 8] *= 0.6 # 1 - Box alpha
# Then draw the stuff that needs to be done on the cpu
# Note, make sure this is a uint8 tensor or opencv will not anti alias text for whatever reason
img_numpy = (img_gpu * 255).byte().cpu().numpy()
if args.display_fps:
# Draw the text on the CPU
text_pt = (4, text_h + 2)
text_color = [255, 255, 255]
cv2.putText(img_numpy, fps_str, text_pt, font_face, font_scale, text_color, font_thickness, cv2.LINE_AA)
if num_dets_to_consider == 0:
return img_numpy
if args.display_text or args.display_bboxes:
for j in reversed(range(num_dets_to_consider)):
x1, y1, x2, y2 = boxes[j, :]
color = get_color(j)
score = scores[j]
if args.display_bboxes:
cv2.rectangle(img_numpy, (x1, y1), (x2, y2), color, 1)
if args.display_text:
_class = cfg.dataset.class_names[classes[j]]
text_str = '%s: %.2f' % (_class, score) if args.display_scores else _class
font_face = cv2.FONT_HERSHEY_DUPLEX
font_scale = 0.6
font_thickness = 1
text_w, text_h = cv2.getTextSize(text_str, font_face, font_scale, font_thickness)[0]
text_pt = (x1, y1 - 3)
text_color = [255, 255, 255]
cv2.rectangle(img_numpy, (x1, y1), (x1 + text_w, y1 - text_h - 4), color, -1)
cv2.putText(img_numpy, text_str, text_pt, font_face, font_scale, text_color, font_thickness,
cv2.LINE_AA)
return img_numpy
def prep_benchmark(dets_out, h, w):
with timer.env('Postprocess'):
t = postprocess(dets_out, w, h, crop_masks=args.crop, score_threshold=args.score_threshold)
with timer.env('Copy'):
classes, scores, boxes, masks = [x[:args.top_k] for x in t]
if isinstance(scores, list):
box_scores = scores[0].cpu().numpy()
mask_scores = scores[1].cpu().numpy()
else:
scores = scores.cpu().numpy()
classes = classes.cpu().numpy()
boxes = boxes.cpu().numpy()
masks = masks.cpu().numpy()
with timer.env('Sync'):
# Just in case
torch.cuda.synchronize()
def prep_coco_cats():
""" Prepare inverted table for category id lookup given a coco cats object. """
for coco_cat_id, transformed_cat_id_p1 in get_label_map().items():
transformed_cat_id = transformed_cat_id_p1 - 1
coco_cats[transformed_cat_id] = coco_cat_id
coco_cats_inv[coco_cat_id] = transformed_cat_id
def get_coco_cat(transformed_cat_id):
""" transformed_cat_id is [0,80) as indices in cfg.dataset.class_names """
return coco_cats[transformed_cat_id]
def get_transformed_cat(coco_cat_id):
""" transformed_cat_id is [0,80) as indices in cfg.dataset.class_names """
return coco_cats_inv[coco_cat_id]
class Detections:
def __init__(self):
self.bbox_data = []
self.mask_data = []
def add_bbox(self, image_id: int, category_id: int, bbox: list, score: float):
""" Note that bbox should be a list or tuple of (x1, y1, x2, y2) """
bbox = [bbox[0], bbox[1], bbox[2] - bbox[0], bbox[3] - bbox[1]]
# Round to the nearest 10th to avoid huge file sizes, as COCO suggests
bbox = [round(float(x) * 10) / 10 for x in bbox]
self.bbox_data.append({
'image_id': int(image_id),
'category_id': get_coco_cat(int(category_id)),
'bbox': bbox,
'score': float(score)
})
def add_mask(self, image_id: int, category_id: int, segmentation: np.ndarray, score: float):
""" The segmentation should be the full mask, the size of the image and with size [h, w]. """
rle = pycocotools.mask.encode(np.asfortranarray(segmentation.astype(np.uint8)))
rle['counts'] = rle['counts'].decode('ascii') # json.dump doesn't like bytes strings
self.mask_data.append({
'image_id': int(image_id),
'category_id': get_coco_cat(int(category_id)),
'segmentation': rle,
'score': float(score)
})
def dump(self):
dump_arguments = [
(self.bbox_data, args.bbox_det_file),
(self.mask_data, args.mask_det_file)
]
for data, path in dump_arguments:
with open(path, 'w') as f:
json.dump(data, f)
def dump_web(self):
""" Dumps it in the format for my web app. Warning: bad code ahead! """
config_outs = ['preserve_aspect_ratio', 'use_prediction_module',
'use_yolo_regressors', 'use_prediction_matching',
'train_masks']
output = {
'info': {
'Config': {key: getattr(cfg, key) for key in config_outs},
}
}
image_ids = list(set([x['image_id'] for x in self.bbox_data]))
image_ids.sort()
image_lookup = {_id: idx for idx, _id in enumerate(image_ids)}
output['images'] = [{'image_id': image_id, 'dets': []} for image_id in image_ids]
# These should already be sorted by score with the way prep_metrics works.
for bbox, mask in zip(self.bbox_data, self.mask_data):
image_obj = output['images'][image_lookup[bbox['image_id']]]
image_obj['dets'].append({
'score': bbox['score'],
'bbox': bbox['bbox'],
'category': cfg.dataset.class_names[get_transformed_cat(bbox['category_id'])],
'mask': mask['segmentation'],
})
with open(os.path.join(args.web_det_path, '%s.json' % cfg.name), 'w') as f:
json.dump(output, f)
def _mask_iou(mask1, mask2, iscrowd=False):
with timer.env('Mask IoU'):
ret = mask_iou(mask1, mask2, iscrowd)
return ret.cpu()
def _bbox_iou(bbox1, bbox2, iscrowd=False):
with timer.env('BBox IoU'):
ret = jaccard(bbox1, bbox2, iscrowd)
return ret.cpu()
def prep_metrics(ap_data, dets, img, gt, gt_masks, h, w, num_crowd, image_id, detections: Detections = None):
""" Returns a list of APs for this image, with each element being for a class """
if not args.output_coco_json:
with timer.env('Prepare gt'):
gt_boxes = torch.Tensor(gt[:, :4])
gt_boxes[:, [0, 2]] *= w
gt_boxes[:, [1, 3]] *= h
gt_classes = list(gt[:, 4].astype(int))
gt_masks = torch.Tensor(gt_masks).view(-1, h * w)
if num_crowd > 0:
split = lambda x: (x[-num_crowd:], x[:-num_crowd])
crowd_boxes, gt_boxes = split(gt_boxes)
crowd_masks, gt_masks = split(gt_masks)
crowd_classes, gt_classes = split(gt_classes)
with timer.env('Postprocess'):
classes, scores, boxes, masks = postprocess(dets, w, h, crop_masks=args.crop,
score_threshold=args.score_threshold)
if classes.size(0) == 0:
return
classes = list(classes.cpu().numpy().astype(int))
if isinstance(scores, list):
box_scores = list(scores[0].cpu().numpy().astype(float))
mask_scores = list(scores[1].cpu().numpy().astype(float))
else:
scores = list(scores.cpu().numpy().astype(float))
box_scores = scores
mask_scores = scores
masks = masks.view(-1, h * w).cuda()
boxes = boxes.cuda()
if args.output_coco_json:
with timer.env('JSON Output'):
boxes = boxes.cpu().numpy()
masks = masks.view(-1, h, w).cpu().numpy()
for i in range(masks.shape[0]):
# Make sure that the bounding box actually makes sense and a mask was produced
if (boxes[i, 3] - boxes[i, 1]) * (boxes[i, 2] - boxes[i, 0]) > 0:
detections.add_bbox(image_id, classes[i], boxes[i, :], box_scores[i])
detections.add_mask(image_id, classes[i], masks[i, :, :], mask_scores[i])
return
with timer.env('Eval Setup'):
num_pred = len(classes)
num_gt = len(gt_classes)
mask_iou_cache = _mask_iou(masks, gt_masks)
bbox_iou_cache = _bbox_iou(boxes.float(), gt_boxes.float())
if num_crowd > 0:
crowd_mask_iou_cache = _mask_iou(masks, crowd_masks, iscrowd=True)
crowd_bbox_iou_cache = _bbox_iou(boxes.float(), crowd_boxes.float(), iscrowd=True)
else:
crowd_mask_iou_cache = None
crowd_bbox_iou_cache = None
box_indices = sorted(range(num_pred), key=lambda i: -box_scores[i])
mask_indices = sorted(box_indices, key=lambda i: -mask_scores[i])
iou_types = [
('box', lambda i, j: bbox_iou_cache[i, j].item(),
lambda i, j: crowd_bbox_iou_cache[i, j].item(),
lambda i: box_scores[i], box_indices),
('mask', lambda i, j: mask_iou_cache[i, j].item(),
lambda i, j: crowd_mask_iou_cache[i, j].item(),
lambda i: mask_scores[i], mask_indices)
]
timer.start('Main loop')
for _class in set(classes + gt_classes):
ap_per_iou = []
num_gt_for_class = sum([1 for x in gt_classes if x == _class])
for iouIdx in range(len(iou_thresholds)):
iou_threshold = iou_thresholds[iouIdx]
for iou_type, iou_func, crowd_func, score_func, indices in iou_types:
gt_used = [False] * len(gt_classes)
ap_obj = ap_data[iou_type][iouIdx][_class]
ap_obj.add_gt_positives(num_gt_for_class)
for i in indices:
if classes[i] != _class:
continue
max_iou_found = iou_threshold
max_match_idx = -1
for j in range(num_gt):
if gt_used[j] or gt_classes[j] != _class:
continue
iou = iou_func(i, j)
if iou > max_iou_found:
max_iou_found = iou
max_match_idx = j
if max_match_idx >= 0:
gt_used[max_match_idx] = True
ap_obj.push(score_func(i), True)
else:
# If the detection matches a crowd, we can just ignore it
matched_crowd = False
if num_crowd > 0:
for j in range(len(crowd_classes)):
if crowd_classes[j] != _class:
continue
iou = crowd_func(i, j)
if iou > iou_threshold:
matched_crowd = True
break
# All this crowd code so that we can make sure that our eval code gives the
# same result as COCOEval. There aren't even that many crowd annotations to
# begin with, but accuracy is of the utmost importance.
if not matched_crowd:
ap_obj.push(score_func(i), False)
timer.stop('Main loop')
class APDataObject:
"""
Stores all the information necessary to calculate the AP for one IoU and one class.
Note: I type annotated this because why not.
"""
def __init__(self):
self.data_points = []
self.num_gt_positives = 0
def push(self, score: float, is_true: bool):
self.data_points.append((score, is_true))
def add_gt_positives(self, num_positives: int):
""" Call this once per image. """
self.num_gt_positives += num_positives
def is_empty(self) -> bool:
return len(self.data_points) == 0 and self.num_gt_positives == 0
def get_ap(self) -> float:
""" Warning: result not cached. """
if self.num_gt_positives == 0:
return 0
# Sort descending by score
self.data_points.sort(key=lambda x: -x[0])
precisions = []
recalls = []
num_true = 0
num_false = 0
# Compute the precision-recall curve. The x axis is recalls and the y axis precisions.
for datum in self.data_points:
# datum[1] is whether the detection a true or false positive
if datum[1]:
num_true += 1
else:
num_false += 1
precision = num_true / (num_true + num_false)
recall = num_true / self.num_gt_positives
precisions.append(precision)
recalls.append(recall)
# Smooth the curve by computing [max(precisions[i:]) for i in range(len(precisions))]
# Basically, remove any temporary dips from the curve.
# At least that's what I think, idk. COCOEval did it so I do too.
for i in range(len(precisions) - 1, 0, -1):
if precisions[i] > precisions[i - 1]:
precisions[i - 1] = precisions[i]
# Compute the integral of precision(recall) d_recall from recall=0->1 using fixed-length riemann summation with 101 bars.
y_range = [0] * 101 # idx 0 is recall == 0.0 and idx 100 is recall == 1.00
x_range = np.array([x / 100 for x in range(101)])
recalls = np.array(recalls)
# I realize this is weird, but all it does is find the nearest precision(x) for a given x in x_range.
# Basically, if the closest recall we have to 0.01 is 0.009 this sets precision(0.01) = precision(0.009).
# I approximate the integral this way, because that's how COCOEval does it.
indices = np.searchsorted(recalls, x_range, side='left')
for bar_idx, precision_idx in enumerate(indices):
if precision_idx < len(precisions):
y_range[bar_idx] = precisions[precision_idx]
# Finally compute the riemann sum to get our integral.
# avg([precision(x) for x in 0:0.01:1])
return sum(y_range) / len(y_range)
def badhash(x):
"""
Just a quick and dirty hash function for doing a deterministic shuffle based on image_id.
Source:
https://stackoverflow.com/questions/664014/what-integer-hash-function-are-good-that-accepts-an-integer-hash-key
"""
x = (((x >> 16) ^ x) * 0x045d9f3b) & 0xFFFFFFFF
x = (((x >> 16) ^ x) * 0x045d9f3b) & 0xFFFFFFFF
x = ((x >> 16) ^ x) & 0xFFFFFFFF
return x
def evalimage(net: Yolact, path: str, save_path: str = None):
frame = torch.from_numpy(cv2.imread(path)).cuda().float()
batch = FastBaseTransform()(frame.unsqueeze(0))
preds = net(batch)
img_numpy = prep_display(preds, frame, None, None, undo_transform=False)
if save_path is None:
img_numpy = img_numpy[:, :, (2, 1, 0)]
if save_path is None:
plt.imshow(img_numpy)
plt.title(path)
plt.show()
else:
cv2.imwrite(save_path, img_numpy)
def evalimages(net: Yolact, input_folder: str, output_folder: str):
if not os.path.exists(output_folder):
os.mkdir(output_folder)
print()
for p in Path(input_folder).glob('*'):
path = str(p)
name = os.path.basename(path)
name = '.'.join(name.split('.')[:-1]) + '.png'
out_path = os.path.join(output_folder, name)
evalimage(net, path, out_path)
print(path + ' -> ' + out_path)
print('Done.')
from multiprocessing.pool import ThreadPool
from queue import Queue
class CustomDataParallel(torch.nn.DataParallel):
""" A Custom Data Parallel class that properly gathers lists of dictionaries. """
def gather(self, outputs, output_device):
# Note that I don't actually want to convert everything to the output_device
return sum(outputs, [])
def evalvideo(net: Yolact, path: str, out_path: str = None):
# If the path is a digit, parse it as a webcam index
is_webcam = path.isdigit()
# If the input image size is constant, this make things faster (hence why we can use it in a video setting).
cudnn.benchmark = True
if is_webcam:
vid = cv2.VideoCapture(int(path))
else:
vid = cv2.VideoCapture(path)
if not vid.isOpened():
print('Could not open video "%s"' % path)
exit(-1)
target_fps = round(vid.get(cv2.CAP_PROP_FPS))
frame_width = round(vid.get(cv2.CAP_PROP_FRAME_WIDTH))
frame_height = round(vid.get(cv2.CAP_PROP_FRAME_HEIGHT))
num_frames = round(vid.get(cv2.CAP_PROP_FRAME_COUNT))
if is_webcam:
num_frames = float('inf')
net = CustomDataParallel(net).cuda()
transform = torch.nn.DataParallel(FastBaseTransform()).cuda()
frame_times = MovingAverage(100)
fps = 0
frame_time_target = 1 / target_fps
running = True
fps_str = ''
vid_done = False
frames_displayed = 0
if out_path is not None:
out = cv2.VideoWriter(out_path, cv2.VideoWriter_fourcc(*"mp4v"), target_fps, (frame_width, frame_height))
def cleanup_and_exit():
print()
pool.terminate()
vid.release()
if out_path is not None:
out.release()
cv2.destroyAllWindows()
exit()
def get_next_frame(vid):
frames = []
for idx in range(args.video_multiframe):
frame = vid.read()[1]
if frame is None:
return frames
frames.append(frame)
return frames
def transform_frame(frames):
with torch.no_grad():
frames = [torch.from_numpy(frame).cuda().float() for frame in frames]
return frames, transform(torch.stack(frames, 0))
def eval_network(inp):
with torch.no_grad():
frames, imgs = inp
num_extra = 0
while imgs.size(0) < args.video_multiframe:
imgs = torch.cat([imgs, imgs[0].unsqueeze(0)], dim=0)
num_extra += 1
out = net(imgs)
if num_extra > 0:
out = out[:-num_extra]
return frames, out
def prep_frame(inp, fps_str):
with torch.no_grad():
frame, preds = inp
return prep_display(preds, frame, None, None, undo_transform=False, class_color=True, fps_str=fps_str)
frame_buffer = Queue()
video_fps = 0
# All this timing code to make sure that
def play_video():
try:
nonlocal frame_buffer, running, video_fps, is_webcam, num_frames, frames_displayed, vid_done
video_frame_times = MovingAverage(100)
frame_time_stabilizer = frame_time_target
last_time = None
stabilizer_step = 0.0005
progress_bar = ProgressBar(30, num_frames)
while running:
frame_time_start = time.time()
if not frame_buffer.empty():
next_time = time.time()
if last_time is not None:
video_frame_times.add(next_time - last_time)
video_fps = 1 / video_frame_times.get_avg()
if out_path is None:
cv2.imshow(path, frame_buffer.get())
else:
out.write(frame_buffer.get())
frames_displayed += 1
last_time = next_time
if out_path is not None:
if video_frame_times.get_avg() == 0:
fps = 0
else:
fps = 1 / video_frame_times.get_avg()
progress = frames_displayed / num_frames * 100
progress_bar.set_val(frames_displayed)
print('\rProcessing Frames %s %6d / %6d (%5.2f%%) %5.2f fps '
% (repr(progress_bar), frames_displayed, num_frames, progress, fps), end='')
# This is split because you don't want savevideo to require cv2 display functionality (see #197)
if out_path is None and cv2.waitKey(1) == 27:
# Press Escape to close
running = False
if not (frames_displayed < num_frames):
running = False
if not vid_done:
buffer_size = frame_buffer.qsize()
if buffer_size < args.video_multiframe:
frame_time_stabilizer += stabilizer_step
elif buffer_size > args.video_multiframe:
frame_time_stabilizer -= stabilizer_step
if frame_time_stabilizer < 0:
frame_time_stabilizer = 0
new_target = frame_time_stabilizer if is_webcam else max(frame_time_stabilizer, frame_time_target)
else:
new_target = frame_time_target
next_frame_target = max(2 * new_target - video_frame_times.get_avg(), 0)
target_time = frame_time_start + next_frame_target - 0.001 # Let's just subtract a millisecond to be safe
if out_path is None or args.emulate_playback:
# This gives more accurate timing than if sleeping the whole amount at once
while time.time() < target_time:
time.sleep(0.001)
else:
# Let's not starve the main thread, now
time.sleep(0.001)
except:
# See issue #197 for why this is necessary
import traceback
traceback.print_exc()
extract_frame = lambda x, i: (
x[0][i] if x[1][i] is None else x[0][i].to(x[1][i]['detection']['box'].device), [x[1][i]])
# Prime the network on the first frame because I do some thread unsafe things otherwise
print('Initializing model... ', end='')
first_batch = eval_network(transform_frame(get_next_frame(vid)))
print('Done.')
# For each frame the sequence of functions it needs to go through to be processed (in reversed order)
sequence = [prep_frame, eval_network, transform_frame]
pool = ThreadPool(processes=len(sequence) + args.video_multiframe + 2)
pool.apply_async(play_video)
active_frames = [{'value': extract_frame(first_batch, i), 'idx': 0} for i in range(len(first_batch[0]))]
print()
if out_path is None: print('Press Escape to close.')
try:
while vid.isOpened() and running:
# Hard limit on frames in buffer so we don't run out of memory >.>
while frame_buffer.qsize() > 100:
time.sleep(0.001)
start_time = time.time()
# Start loading the next frames from the disk
if not vid_done:
next_frames = pool.apply_async(get_next_frame, args=(vid,))
else:
next_frames = None
if not (vid_done and len(active_frames) == 0):
# For each frame in our active processing queue, dispatch a job
# for that frame using the current function in the sequence
for frame in active_frames:
_args = [frame['value']]
if frame['idx'] == 0:
_args.append(fps_str)
frame['value'] = pool.apply_async(sequence[frame['idx']], args=_args)
# For each frame whose job was the last in the sequence (i.e. for all final outputs)
for frame in active_frames:
if frame['idx'] == 0:
frame_buffer.put(frame['value'].get())
# Remove the finished frames from the processing queue
active_frames = [x for x in active_frames if x['idx'] > 0]
# Finish evaluating every frame in the processing queue and advanced their position in the sequence
for frame in list(reversed(active_frames)):
frame['value'] = frame['value'].get()
frame['idx'] -= 1
if frame['idx'] == 0:
# Split this up into individual threads for prep_frame since it doesn't support batch size
active_frames += [{'value': extract_frame(frame['value'], i), 'idx': 0} for i in
range(1, len(frame['value'][0]))]
frame['value'] = extract_frame(frame['value'], 0)
# Finish loading in the next frames and add them to the processing queue
if next_frames is not None:
frames = next_frames.get()
if len(frames) == 0:
vid_done = True
else:
active_frames.append({'value': frames, 'idx': len(sequence) - 1})
# Compute FPS
frame_times.add(time.time() - start_time)
fps = args.video_multiframe / frame_times.get_avg()
else:
fps = 0
fps_str = 'Processing FPS: %.2f | Video Playback FPS: %.2f | Frames in Buffer: %d' % (
fps, video_fps, frame_buffer.qsize())
if not args.display_fps:
print('\r' + fps_str + ' ', end='')
except KeyboardInterrupt:
print('\nStopping...')
cleanup_and_exit()
def evaluate(net: Yolact, dataset, train_mode=False):
net.detect.use_fast_nms = args.fast_nms
net.detect.use_cross_class_nms = args.cross_class_nms
cfg.mask_proto_debug = args.mask_proto_debug
# TODO Currently we do not support Fast Mask Re-scroing in evalimage, evalimages, and evalvideo
if args.image is not None:
if ':' in args.image:
inp, out = args.image.split(':')
evalimage(net, inp, out)
else:
evalimage(net, args.image)
return
elif args.images is not None:
inp, out = args.images.split('::') ########################################################################################
evalimages(net, inp, out)
return
elif args.video is not None:
if ':' in args.video:
inp, out = args.video.split(':')
evalvideo(net, inp, out)
else:
evalvideo(net, args.video)
return
frame_times = MovingAverage()
dataset_size = len(dataset) if args.max_images < 0 else min(args.max_images, len(dataset))
progress_bar = ProgressBar(30, dataset_size)
print()
if not args.display and not args.benchmark:
# For each class and iou, stores tuples (score, isPositive)
# Index ap_data[type][iouIdx][classIdx]
ap_data = {
'box': [[APDataObject() for _ in cfg.dataset.class_names] for _ in iou_thresholds],
'mask': [[APDataObject() for _ in cfg.dataset.class_names] for _ in iou_thresholds]
}
detections = Detections()
else:
timer.disable('Load Data')
dataset_indices = list(range(len(dataset)))
if args.shuffle:
random.shuffle(dataset_indices)
elif not args.no_sort: ###############################################################################################################
# Do a deterministic shuffle based on the image ids
#
# I do this because on python 3.5 dictionary key order is *random*, while in 3.6 it's
# the order of insertion. That means on python 3.6, the images come in the order they are in
# in the annotations file. For some reason, the first images in the annotations file are
# the hardest. To combat this, I use a hard-coded hash function based on the image ids
# to shuffle the indices we use. That way, no matter what python version or how pycocotools
# handles the data, we get the same result every time.
# hashed = [badhash(x) for x in dataset.ids]
# dataset_indices.sort(key=lambda x: hashed[x])
pass
dataset_indices = dataset_indices[:dataset_size]
try:
# Main eval loop
for it, image_idx in enumerate(dataset_indices):
timer.reset()
with timer.env('Load Data'):
img, gt, gt_masks, h, w, num_crowd = dataset.pull_item(image_idx)
# Test flag, do not upvote
if cfg.mask_proto_debug:
with open('scripts/info.txt', 'w') as f:
f.write(str(dataset.ids[image_idx]))
np.save('scripts/gt.npy', gt_masks)
batch = Variable(img.unsqueeze(0))
if args.cuda:
batch = batch.cuda()
with timer.env('Network Extra'):
preds = net(batch)
# Perform the meat of the operation here depending on our mode.
if args.display:
img_numpy = prep_display(preds, img, h, w)
elif args.benchmark:
prep_benchmark(preds, h, w)
else:
prep_metrics(ap_data, preds, img, gt, gt_masks, h, w, num_crowd, dataset.ids[image_idx], detections)
# First couple of images take longer because we're constructing the graph.
# Since that's technically initialization, don't include those in the FPS calculations.
if it > 1:
frame_times.add(timer.total_time())
if args.display:
if it > 1:
print('Avg FPS: %.4f' % (1 / frame_times.get_avg()))
plt.imshow(img_numpy)
plt.title(str(dataset.ids[image_idx]))
plt.show()
elif not args.no_bar:
if it > 1:
fps = 1 / frame_times.get_avg()
else:
fps = 0
progress = (it + 1) / dataset_size * 100
progress_bar.set_val(it + 1)
print('\rProcessing Images %s %6d / %6d (%5.2f%%) %5.2f fps '
% (repr(progress_bar), it + 1, dataset_size, progress, fps), end='')
if not args.display and not args.benchmark:
print()
if args.output_coco_json:
print('Dumping detections...')
if args.output_web_json:
detections.dump_web()
else:
detections.dump()
else:
if not train_mode:
print('Saving data...')
with open(args.ap_data_file, 'wb') as f:
pickle.dump(ap_data, f)
return calc_map(ap_data)
elif args.benchmark:
print()
print()
print('Stats for the last frame:')
timer.print_stats()
avg_seconds = frame_times.get_avg()
print('Average: %5.2f fps, %5.2f ms' % (1 / frame_times.get_avg(), 1000 * avg_seconds))
except KeyboardInterrupt:
print('Stopping...')
def calc_map(ap_data):
print('Calculating mAP...')
aps = [{'box': [], 'mask': []} for _ in iou_thresholds]
for _class in range(len(cfg.dataset.class_names)):
for iou_idx in range(len(iou_thresholds)):
for iou_type in ('box', 'mask'):
ap_obj = ap_data[iou_type][iou_idx][_class]
if not ap_obj.is_empty():
aps[iou_idx][iou_type].append(ap_obj.get_ap())
all_maps = {'box': OrderedDict(), 'mask': OrderedDict()}
# Looking back at it, this code is really hard to read :/
for iou_type in ('box', 'mask'):
all_maps[iou_type]['all'] = 0 # Make this first in the ordereddict
for i, threshold in enumerate(iou_thresholds):
mAP = sum(aps[i][iou_type]) / len(aps[i][iou_type]) * 100 if len(aps[i][iou_type]) > 0 else 0
all_maps[iou_type][int(threshold * 100)] = mAP
all_maps[iou_type]['all'] = (sum(all_maps[iou_type].values()) / (len(all_maps[iou_type].values()) - 1))
print_maps(all_maps)
# Put in a prettier format so we can serialize it to json during training
all_maps = {k: {j: round(u, 2) for j, u in v.items()} for k, v in all_maps.items()}
return all_maps
def print_maps(all_maps):
# Warning: hacky
make_row = lambda vals: (' %5s |' * len(vals)) % tuple(vals)
make_sep = lambda n: ('-------+' * n)
print()
print(make_row([''] + [('.%d ' % x if isinstance(x, int) else x + ' ') for x in all_maps['box'].keys()]))
print(make_sep(len(all_maps['box']) + 1))
for iou_type in ('box', 'mask'):
print(make_row([iou_type] + ['%.2f' % x if x < 100 else '%.1f' % x for x in all_maps[iou_type].values()]))
print(make_sep(len(all_maps['box']) + 1))
print()
if __name__ == '__main__':
parse_args()
if args.config is not None:
set_cfg(args.config)
if args.trained_model == 'interrupt':
args.trained_model = SavePath.get_interrupt('weights/')
elif args.trained_model == 'latest':
args.trained_model = SavePath.get_latest('weights/', cfg.name)
if args.config is None:
model_path = SavePath.from_str(args.trained_model)
# TODO: Bad practice? Probably want to do a name lookup instead.
args.config = model_path.model_name + '_config'
print('Config not specified. Parsed %s from the file name.\n' % args.config)
set_cfg(args.config)
if args.detect:
cfg.eval_mask_branch = False
if args.dataset is not None:
set_dataset(args.dataset)
with torch.no_grad():
if not os.path.exists('results'):
os.makedirs('results')
if args.cuda:
cudnn.fastest = True
torch.set_default_tensor_type('torch.cuda.FloatTensor')
else:
torch.set_default_tensor_type('torch.FloatTensor')
if args.resume and not args.display:
with open(args.ap_data_file, 'rb') as f:
ap_data = pickle.load(f)
calc_map(ap_data)
exit()
if args.image is None and args.video is None and args.images is None:
dataset = COCODetection(cfg.dataset.valid_images, cfg.dataset.valid_info,
transform=BaseTransform(), has_gt=cfg.dataset.has_gt)
prep_coco_cats()
else:
dataset = None
print('Loading model...', end='')
net = Yolact()
net.load_weights(args.trained_model)
net.eval()
print(' Done.')
if args.cuda:
net = net.cuda()
start_time = time.time()
evaluate(net, dataset)
print(time.time()-start_time)
来源：CSDN
作者：mjiansun
链接：https://blog.csdn.net/u013066730/article/details/104047735