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Finding rectangles of a specific size in an image

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GEETHA KANNIAH
GEETHA KANNIAH 2019-12-13
回答： Vinai Datta Thatiparthi 2019-12-16
I have 2 pictures:
1: a picture of 2x4 lego piece
2: a picture of scattered lego pieces
I need to find all 2x4 lego pieces of picture 1 in picture 2.
I tried finding the distline of the 2x4 lego piece, but I can't match it to the ones in the 2nd image.
I also considered using a histogram to compare values of blocks, but I can't seem to get the individual blocks of the same size in image 2

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Vinai Datta Thatiparthi
Hi Geetha!
MATLAB supports detection of features through multiple functions that employ different feature detection algorithms. Here is the list.
Further, here is a step-by-step example on “Object Detection in a Cluttered Scene Using Point Feature Matching” that may be of help to you. This example uses the SURF Features to match the objects between the 2 images.
Hope this helps!

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