How to calculate the area of an input image?

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Mara Pereira
Mara Pereira le 21 Juin 2020
Commenté : Image Analyst le 28 Juin 2020
How can I calculate the area of an input image with .jpg extension? If someone could explain please, it´s for a school project. And its suposed to be done using a scanner.
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KSSV
KSSV le 21 Juin 2020
What you have in image? How you can calculate the area of image? You want to find the dimensions of an image?
Mara Pereira
Mara Pereira le 21 Juin 2020
Modifié(e) : Mara Pereira le 21 Juin 2020
It will be this image, for example.
It is to calculate the area of the green part.

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Image Analyst
Image Analyst le 21 Juin 2020
  1. Use imsplit() to get the red, green, and blue channel.
  2. The leaf will be dark in the blue channel. Threshold the blue channel to get a mask = blueChannel < 200.
  3. Call bwarea() on the resulting mask.

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