flannbasedmatcher

Using the FlannBasedMatcher in OpenCV, I am getting different results calling the matcher with the same parameters. Can anyone suggest what I am doing wrong please? The code below shows a minimal example of the problem I am having - it is simplified representative of how I use the FlannBasedMatcher - this isn't real code :) Results output each time around the loop should be identical, but they are not. int const k = std::min(query_descriptors.rows, std::min(train_descriptors.rows, 2)); cv::Mat query_descriptors_original = query_descriptors.clone(); cv::Mat train_descriptors_original = train

I have a panorama image, and a smaller image of buildings seen within that panorama image. What I want to do is recognise if the buildings in that smaller image are in that panorama image, and how the 2 images line up. For this first example, I'm using a cropped version of my panorama image, so the pixels are identical. import cv2 import matplotlib.pyplot as plt import matplotlib.image as mpimg import numpy as np import math # Load images cwImage = cv2.imread('cw1.jpg',0) panImage = cv2.imread('pan1.jpg',0) # Prepare for SURF image analysis surf = cv2.xfeatures2d.SURF_create(4000) # Find