image information along a polar coordinate system?

I have a set of png images that I would like to process with Python and associated tools. Each image represents a ph...

How to detect black shaped contour on photo with OpenCV-Python?

I am trying to detect black shape on photo like this. So far i have picture with shape but still on there is man...

Recognize open and closed shapes opencv?

how to detect open and closed shapes in opencv. These are simple sample shapes I want to detect. I have detected ...

Greyscale darkening problem with Bitmap image in C#?

I'm loading a 8bppIndexed greyscale image into memory and reading the pixel values. The problem is that the values ...

Align profile face image with its frontal face image?

I have a profile face: and a frontal face image: Output: aligned profile face with reference to frontal face. ...

How to detect bullet holes on the target using Android Opencv?

I am working in a project where I have to scan the target and recognize the holes in the target and have to score ac...

How to detect bullet holes on the target?

I want to know how to detect the bullet holes on the target using Python and OpenCV. I'm not able to draw the cont...

Counting the White dots in a Black background?

After preprocessing a fabric image, I got an output with white dots as follows: Dot Map The aim is to output two...

Implementing Photoshop's “Poster edges” -filter?

I'm trying to find out what effects the Photoshop "Poster edges" filter is composed of. It seems it's a combination ...

2d matrix to image of a cone?

I have a 2D numpy matrix of size 512x256. I can easily convert it to an image using PIL, or scipy, etc. but that giv...

Reverse the effect of a spherical image?

I want to reverse the effect of a spherical image such as this one: Provided the image, I would like to be able t...

How to read a maze from an image and convert it to binary values in Python?

I want some way (In Python 3) to read pixels of a maze image and the expected output should be a binary list [[1, 1,...

ImageMagick: put white background under transparent PNG, then invert colors?

I have a PNG image with a black shape on transparent background. I need a white shape on a solid black background in...

How to obtain the index value from an indexed image in MATLAB??

I have an indexed image loaded in MATLAB and if I use the data cursor, I able to obtain the X, Y,RGB and Index value...

Script to export non-transparent extremities of PNG files?

This is a bit of a complicated question because I don't really know where to start or what technology to use to arri...