Issue In numpy, how to efficiently build a mapping from each unique value to its indices, without using a for loop I considered the following alternatives, but they are not efficient enough for my use case because I use largeContinue reading
[SOLVED] local histogram equalization in matlab / python
Issue i am very new in matlab. i want to write the code for local histogram equalization . i have been written code for global histogram equalization and i know that local equalization means do equalization for each part ofContinue reading
[SOLVED] how to detect partial corrupted images in Jpg/Jpeg format
Issue In a very big image dataset, we have some corrupted images as following images. These images can be viewed without any problem, but human eyes can see some corrupted areas in gray color. How can I detect these corruptedContinue reading
[SOLVED] OpenCV Python how to keep one color as is converting an image to Grayscale
Issue How do I make it so everything in the image is in gray-scale except the orange cone. Using opencv python. Solution You can achieve your goal by using bitwise_and() function and thresholding. Steps: generate mask for the required region.(hereContinue reading
[SOLVED] Image processing with blob detection on binary image
Issue My blob detector is not coloring my binary image. Can somone explain the problem? code: ## mask of yellow color mask_yellow = cv2.inRange(Img, (0, 180, 240), (20, 255, 255)) #define kernel size kernel = np.ones((15,15), np.uint8) # Remove unnecessaryContinue reading
[SOLVED] Is the sum of an images histogram not just the area of the image?
Issue I’ve seen a few times in scientific papers people referring to the sum of an image’s histogram, and then in the reference source code they’re using the python sum() function over an openCV’s calcHistogram output. Surely this just equalContinue reading
[SOLVED] Option for Snappy ProductIO module to read the bands of tiff image
Issue In the video I followed, they read the bands of the tiff image using the ESA Snappy module. Like this: But I failed to install this module to my Python 3.8 environment. Instead, I tried using a different packageContinue reading
[SOLVED] Scikit Image load binary image and convert to binary matrix
Issue I have created a numpy array shape(11 x 11) with all pixels 0 excluding one column filled with 1. [[ 0 0 0 0 0 1 0 0 0 0 0 ] [ 0 0 0 0 0 1Continue reading
[SOLVED] How to exaggerate color differences with OpenCV?
Issue I am trying to make it easier for Canny Edge detection to find edges by exaggerating differences in colors in an image. For example, giving it the following image: Canny returns: As you can see, Canny omits most ofContinue reading
[SOLVED] How can I read an matplotlib image without the axis and whitespace?
Issue I have made a couple of images which I need for a CNN using matplotlib. But I would like to read only the base of the image (without the axis and the whitespace), because I found out that myContinue reading