python-imaging-library

问题 x is a numpy.float32 array, with values from -200 to 0 . These are dB (decibel) values. When I do (as recommended here): Image.fromarray(x, mode='F') I get a greyscale or sometimes nearly black image. How to map a float in [-200, 0] to a 24-bit RGB byte array (using a colormap) that can be read with the Python module PIL with Image.fromarray(x, mode='RGB') ? Edit: The required .wav audio file is here, for which we want to plot the spectrogram. Here is some code to test: import scipy, numpy as

问题 I wanted to know if it was possible to resize the image dynamically(maintaining its aspect ratio). I made an image viewer app, but then the vertically long images overflow the screen, so i wanted to know a method to resize image, ive tried a way and its included below. But still im getting the same output that overflows the screen. from win32api import GetSystemMetrics from tkinter import * screen_width, screen_height = GetSystemMetrics(0), GetSystemMetrics(1) root = Tk() # this is your

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: How to merge a transparant png image with another image using PIL I have a couple of PNG files: http://dl.dropbox.com/u/6599273/testing/image1.png http://dl.dropbox.com/u/6599273/testing/image2.png As you can see, those images have transparent parts. When you put one on top each other they will form a nice looking image. Here, the composed image: http://dl.dropbox.com/u/6599273/testing/image_composed.png I

问题 I want to create a program for making a bingo, and I have everything set up except putting the text, which may range from a single word to even a whole sentence, into each field. How would I go about wrapping that text and adjusting the font size so it fits into each field? 回答1: I don't know of a way of auto-sizing text with PIL, but you can do it with wand. I am not that experienced with wand , but you can use the caption() method if you want your text auto-wrapped and sized. I changed the

问题 I want to create a program for making a bingo, and I have everything set up except putting the text, which may range from a single word to even a whole sentence, into each field. How would I go about wrapping that text and adjusting the font size so it fits into each field? 回答1: I don't know of a way of auto-sizing text with PIL, but you can do it with wand. I am not that experienced with wand , but you can use the caption() method if you want your text auto-wrapped and sized. I changed the

问题 I want to create an image in PILLOW and show it on the screen on the Raspberry Pi with for example omxiv direct from memory without saving it to the memory card, something like this: Python 2.7: from PIL import Image import os img = Image.new('RGB', size=(150, 50), color=(0, 0, 255)) .... im_file = ???? os.system('omxiv im_file') Can anybody tell me how to do this? 回答1: I did some experiments with the framebuffer on my Raspberry Pi 4. Here is what I managed to work out... You can get the

问题 I want to create an image in PILLOW and show it on the screen on the Raspberry Pi with for example omxiv direct from memory without saving it to the memory card, something like this: Python 2.7: from PIL import Image import os img = Image.new('RGB', size=(150, 50), color=(0, 0, 255)) .... im_file = ???? os.system('omxiv im_file') Can anybody tell me how to do this? 回答1: I did some experiments with the framebuffer on my Raspberry Pi 4. Here is what I managed to work out... You can get the

问题 I have an image model where I can upload images and I want to optimize them with pillow, I did that but there is three problems: the images doesn't get saved in the correct folder. django has a feature when there is two files with the same name django adds a random string to its name but now with two images with the same name only one gets uploaded. the original images gets uploaded too. class Images(models.Model): image1 = models.ImageField(upload_to='images/%Y/', validators=

问题 I have an image model where I can upload images and I want to optimize them with pillow, I did that but there is three problems: the images doesn't get saved in the correct folder. django has a feature when there is two files with the same name django adds a random string to its name but now with two images with the same name only one gets uploaded. the original images gets uploaded too. class Images(models.Model): image1 = models.ImageField(upload_to='images/%Y/', validators=

问题 The file exists, path is correct, however I cannot load the .tif file. Please send help? Here's the code .. import os from PIL import Image name = 'PE-0D8-4m-10s-0001_00009_bbo.tif' THIS_FOLDER = os.path.dirname(os.path.abspath(__file__)) filename = os.path.join(THIS_FOLDER, name) image = Image.open(filename) And here's the traceback: Traceback (most recent call last): File "C:\Users\owner\MATLAB Drive\Python\imageload.py", line 23, in <module> image = Image.open(filename) File "C:\Users