I want to compare the object in an image with another picture.Consider 1st image as a doll (10CM) in an image. Both of the images have has to be the same size and channels. Each of the pixels has to be the same value. We can do it in the following seven steps: Load the original image and the second one Check the size of the images Find what’s different between two images Convert them into grayscale Increasing the size of the differences This document shows how to detect differences between two images using Python and OpenCV. I wrote a program to do something very similar maybe 2 years ago using Python/Cython. Later I rewrote it to Go to get better performance. The base... This is a simple and fast way to compare two or more images for similarity. http://www.linuxfestnorthwest.org/sites/default/files/sponsors/elephant.png http://www.linuxfestnorthwest.org/sites/default/files/sponsors/elephant.png Preview: (hide) save. Find difference between the 2 images. Home / Uncategorized / compare two images for similarity python opencv. Hash functions are used in the undouble library to detect (near-)identical images ( disclaimer: I am also the author ). GitHub - farcompen/Opencv-Compare-images: Comparing two images similarity with python and opencv. For a simpler implementation of Earth Mover's Distance (aka Wasserstein Distance) in Python, you could use Scipy: from keras.preprocessing.image im... Increase the size of differences (dilate the image) Threshold the image (Binarize the image) Find the contours for the changes. However, if the performance numbers of an OpenCV implementation for the CPU do not satisfy … Step 3: Call the ImageChops.difference () method with the two images as parameters. Comparer Generate 1 image that is the lower half of the base image; Convert the images to HSV format; Calculate the H-S histogram for all the images and normalize them in order to compare them. On lines 20 and 21 we find the keypoints and descriptors of the original image and of the image to compare. In the Video Input with OpenCV and similarity measurement tutorial I already presented the PSNR and SSIM methods for checking the similarity between the two images. And as you could see, the execution process takes quite some time , especially in the case of the SSIM. OpenCV Watch on. 2nd image is the image of toys including the doll (10CM) object. Detect how similar two images are with Opencv and Python - Pysource compare two images for similarity python opencv