Im trying to make a bot for a game. Basically it picks up items from the ground, thing is these items look different sometimes for ex. the angle is different or they are lying on differentyl colour...

I am using Perceptual hashing technique to find near-duplicate and exact-duplicate images. The code is working perfectly for finding exact-duplicate images. However, finding near-duplicate and slig...

I'm trying to find multiple templates in an image using opencv python, according to this link. But the problem is that multiple points returned for a single object with a slightly difference in po...

The idea: I have one screenshot and want to find all characters and numbers with its postition on this image. The easiest way is to use opencv match template and compare all characters (around 800)...

I have two images which overlap. I'd like to align these two images. My current approach is to find a common feature (a marking) in both images. I'd then like to align these two images according to...

I am trying to extract alphanumeric characters (a-z0-9) which do not form sensefull words from an image which is taken with a consumer camera (including mobile phones). The characters have equal si...

What's the way OpenCV handles transparency in image during template matching? The problem is that the template image needs to have transparent parts, because in the original image there could be a...

I am trying to create a templated can_stream struct that inherits from std::false_type or std::true_type depending on whether operator<< is defined for type T. #include <iostream> stru...

I had the same problem as this question since 2J, but none of the answers worked with Python 3, so today I took all day to solve the problem: python opencv cv2 matchTemplate with transparency (grap...

I have a 3D matrix (very large, let call it L) and a 3D small one (very small, let call it S) and want to use OpenCV to find the closest pattern in L. Does OpenCV do it for me? If yes, how I shoul...

I am struggling with template matching in the Fourier domain in Matlab. Here are my images (the artist is RamalamaCreatures on DeviantArt): My aim is to place a bounding box around the ear of ...

I am evaluating template matching algorithm to differentiate similar and dissimilar objects. What I found is confusing, I had an impression of template matching is a method which compares raw pixel...

I am creating a simple openCV application using template matching where I need to compare find a small image in a big image and return the result as true(if match found) or false( no matches found)...

OpenCV has the matchTemplate() function, which operates by sliding the template input across the output, and generating an array output corresponding to the match. Where can I learn more about how ...

I'm having a bit of trouble with opencv and template matching, so I was hoping someone here could help a lost soul out. So as part of the code I'm using, I've got the following 2 lines which I don...

I am using opencv template matching in real time camera capture, and got the error message: error: (-215) _img.size().height <= _templ.size().height && _img.size().width <= _templ.si...

I searched a lot for finding the threshold values for the below mention methods. methods = ['cv2.TM_CCOEFF', 'cv2.TM_CCOEFF_NORMED', 'cv2.TM_CCORR', 'cv2.TM_CCORR_NORMED', 'cv2.TM_SQDIFF', cv2.TM...

I'm a beginner to OpenCV. I'm trying to do a sample android application to match a template image in a given image using OpenCV Template matching. I searched in the internet and I couldn't find a p...

Anybody know about the fastest method for calculating convolution? Unfortunately the matrix which I deal with is very large (500x500x200) and if I use convn in MATLAB it takes a long time (I have t...

I am trying to implement in Python the following C++ code: https://opencv-code.com/tutorials/fast-template-matching-with-image-pyramid/ If you check the C++ code, you'll see this loop: for (int i...

I'm looking for a algorithm that computes the following: I have an image with a predefined area (the green one on the attached image). The user draws the red rectangle and the algorithm should comp...

I'm trying to match an image with the camera input in Android using template matching. When i try this with static 2 images like in here: OpenCV Template Matching example in Android, everything wor...

I'm using the method of match template with CV_TM_CCORR_NORMED to compare two images ... I want to make to make this rotation and scale invariant .. any ideas? I tried to use the same method on th...

I have this image of a table (seen below). And I'm trying to get the data from the table, similar to this form (first row of table image): rows[0] = [x,x, , , , ,x, ,x,x, ,x, ,x, , , , ,x, , , ,x,...

i am calling: Imgproc.matchTemplate(image, templ, result, 0); and the result of the match is in a Mat instance. I couldn't find any documentation for this class. If i understand right, the resul...