Image processing of a Rubiks cube

Question

Conner Carriere 2021-2-1

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https://ww2.mathworks.cn/matlabcentral/answers/733013-image-processing-of-a-rubiks-cube

评论： DGM 2024-10-7

I am currently working on a project that will solve a Rubiks cube. As of now, I am stuck on the image processing. I have installed the image processing toolbox for matlab. What I need to do is determine which colors are on a single face of a Rubiks cube. This informations will be pulled of of a .jpg image.

Any tips or pointers how to do this?

Thanks!

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Answer 1

Sameer 2024-10-7

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Hi Conner

From my understanding, you want to develop a method to identify and determine the colors present on a single face of a Rubik's Cube from a ".jpg" image.

Here's how you can achieve it:

1. Capture and Preprocess: Obtain a clear image of the Rubik's Cube face with consistent lighting. Convert the image from RGB to HSV color space to simplify color differentiation.

2. Color Segmentation: Use HSV thresholding to segment each color on the cube. Define HSV ranges for each Rubik's Cube color based on sample images.

3. Region Detection: Apply morphological operations to clean up the segmented areas. Use functions like "bwlabel" and "regionprops" to identify individual squares on the cube face.

"bwlabel" : https://www.mathworks.com/help/images/ref/bwlabel.html

"regionprops" : https://www.mathworks.com/help/images/ref/regionprops.html

4. Color Mapping:Calculate average HSV values for each detected region and map them to the closest known Rubik's Cube color.

Hope this helps!