Is it possible perform RMSE and SSIM in different size image?

12 次查看（过去 30 天）

Diah Junaidi 2019-7-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/474200-is-it-possible-perform-rmse-and-ssim-in-different-size-image

评论： Diah Junaidi 2019-8-1

Hi, I wanna obtain RMSE and SSIM in different size image cause the images I used cannot be equalized in size. I attached those images.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Walter Roberson 2019-7-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/474200-is-it-possible-perform-rmse-and-ssim-in-different-size-image#answer_385531

No, those measurements cannot be computed for images that are different sizes.

You would want to trim out the irrelevant borders and then imresize to have them match sizes. It might make sense to resize to a consistent size rather than to the larger or smaller size.

12 个评论
显示 10更早的评论隐藏 10更早的评论

Diah Junaidi 2019-7-31

在 MATLAB Online 中打开

I got these error:

Error using immse

Expected input number 1, A, to be one of these types:

uint8, int8, uint16, int16, uint32, int32, single, double

Instead its type was logical.

Error in immse (line 28)

validateattributes(x,{'uint8', 'int8', 'uint16', 'int16', 'uint32', 'int32', ...

Error in cobaRMSE (line 11)

rmse = sqrt(immse(bwB, double(A)));

for this code:

close
A=imread('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Percobaan Standard\Hasil Citra Ground Truth_1_1.jpg');
B=imread('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Percobaan HSV\1\Hasil Citra HSV_1a.jpg');
[ny1, nx1, np1] = size(A) ; 
[ny2, nx2, np2] = size(B) ; 
nx = max(nx1,nx2) ; ny = max(ny1,ny2) ; 
A = imresize(A, [ny nx]);
B = imresize(B, [ny nx]);
grayImageB = rgb2gray(B); 
bwB = imbinarize(grayImageB);
rmse = sqrt(immse(bwB, double(A)));
% [ssimval, ssimmap] = ssim(resize2,resize1);
% fprintf('The SSIM value is %0.4f.\n',ssimval);
fprintf('The RMSE value is %0.4f.\n',rmse);
figure,
imshowpair(A,B) 

Walter Roberson 2019-8-1

在 MATLAB Online 中打开

pix_used = any(YourImage,3);
col_used = any(pix_used,1);
row_used = any(pix_used,2);
first_col = find(col_used,1);
last_col = find(col_used,1,'last');
first_row = find(row_used,1);
last_row = find(row_used,1,'last');
cropped_image = YourImage(first_row:last_row, first_col:last_col,:);

Diah Junaidi 2019-8-1

在 MATLAB Online 中打开

Got this problem:

Index exceeds matrix dimensions.

Error in cobaRMSE (line 26)

cropped_imageB = A(first_rowB:last_rowB, first_colB:last_colB,:);

close
A=imread('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Percobaan Standard\1.jpg');
B=imread('D:\DIAH\[MATLAB]cv1-fingerspelling-recognition-master\cv1-fingerspelling-recognition-master\Hasil Percobaan HSV\1\Hasil Citra HSV_1a.jpg');
pix_used = any(A,3);
col_used = any(pix_used,1);
row_used = any(pix_used,2);
first_col = find(col_used,1);
last_col = find(col_used,1,'last');
first_row = find(row_used,1);
last_row = find(row_used,1,'last');
cropped_image = A(first_row:last_row, first_col:last_col,:);
pix_usedB = any(B,3);
col_usedB = any(pix_usedB,1);
row_usedB = any(pix_usedB,2);
first_colB = find(col_usedB,1);
last_colB = find(col_usedB,1,'last');
first_rowB = find(row_usedB,1);
last_rowB = find(row_usedB,1,'last');
cropped_imageB = B(first_rowB:last_rowB, first_colB:last_colB,:);
figure,
imshowpair(cropped_image,cropped_imageB) 