python-imageio | 易学教程

ffmpeg installation on macOS for MoviePy fails with SSL error

阅读更多关于 ffmpeg installation on macOS for MoviePy fails with SSL error

问题 I'm trying to write a Python program that uses MoviePy on Mac OS 10.11.16 to convert an MP4 file to GIF. I use: import moviepy.editor as mp and I get an error saying I need to call imageio.plugins.ffmpeg.download() so I can download ffmpeg. I use: import imageio imageio.plugins.ffmpeg.download() which gives me the following error: Imageio: 'ffmpeg.osx' was not found on your computer; downloading it now. Error while fetching file: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate

ValueError: Could not find a format to read the specified file in mode 'i'

阅读更多关于 ValueError: Could not find a format to read the specified file in mode 'i'

问题 I am trying to read a png file into a python-flask application running in docker and am getting an error that says ValueError: Could not find a format to read the specified file in mode 'i' i have uploaded a file using an HTML file and now i am trying to read it for further processing. i see that scipy.misc.imread is deprecated and i am trying to replace this with imageio.imread if request.method=='POST': file = request.files['image'] if not file: return render_template('index.html', label=

VOC2012: PIL Image.open converts PNG to 2d array

阅读更多关于 VOC2012: PIL Image.open converts PNG to 2d array

I am working with VOC2012 dataset. The input image is in PNG format which has a shape of (375, 500, 4) when I use imageio to open the image. When I use PIL to open the image, then suddenly the shape becomes (500, 375). PNG images should have four dimensions on the last axis: r g b & alpha. The image is obviously colored image, so it should have 3 dimensions (height, width, depth). PIL seems to suggest that it only has two dimensions: width & height. Can PNG images be represented by a 2d array? Please help! So lost at the moment. Thanks! from PIL import Image from keras.preprocessing.image

transparent background in gif using Python Imageio

阅读更多关于 transparent background in gif using Python Imageio

问题 Basically I am using following piece of code to make gif out of images, my images are png with transparent background but the gif is with black background. I dont know how to make the gif with transparent background. #gif writer with io.get_writer('my.gif', mode='I', duration=0.1) as writer: for filename in file_names: image = io.imread(filename) writer.append_data(image) #writer.close() where filenames is an array with all the names of file to be used. 回答1: try PIL from PIL import Image def