CODEWITHSUNDEEP
cimage-processingopencv
Aizen
Aizen

Reputation: 581

Find a height of object using OpenCV

I have an image. I have to find the height of a particular object in it.

If we directly take the pixel length it will not give the exact height.How to approach this problem?

Upvotes: 4

Views: 3226

Answers (2)

karlphillip
karlphillip

Reputation: 93410

An alternative approach: place the object on top of a A4 paper sheet and take a picture from above. Since you know the size of paper, you can calculate the size of the object based on that.

To detect a paper sheet, check this post or this.

Upvotes: 1

Seçkin Savaşçı
Seçkin Savaşçı

Reputation: 3486

After you calibrated your camera, you will have a transformation from image plane to world coordinates. Using this information you can predict the height of the object you are looking for, of course in this step you somehow need to identify the object that you are interested in.

Generally speaking, this question is too broad and covers many fundamental concepts of computer vision, so please consult your favorite textbook before attacking the problem.

Upvotes: 4

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