清空筛选条件
清空筛选条件

calculate the percentage of B&W image

20 次查看（过去 30 天）
titi sari
titi sari 2018-6-28
编辑： Guillaume 2018-6-29
I have a black and white image, how do I calculate the percentage of the white area over the black area?

请先登录，再回答此问题。

回答（2 个）

Guillaume
Guillaume 2018-6-29
编辑：Guillaume 2018-6-29
percentageWhite = nnz(yourimage) / numel(yourimage);
nnz gives you the number of white pixels, numel the total number of pixels.
And note:
percentageBlack = nnz(~yourimage) / numel(yourimage);
Nithin Banka
Nithin Banka 2018-6-29
If 'BW' is your binary threshold image,
pix = size(BW);
no_of_pix = pix(1)*pix(2);
no_of_white_pix = sum(sum(BW==1));
percent_of_white_pix = no_of_white_pix*100/no_of_pix; %This gives the percentage of white in the image.

类别

在 Help Center 和 File Exchange 中查找有关 Denoising and Compression 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by