MATLAB代码psnr

算法实现？

您好！关于MATLAB代码psnr算法实现，可以使用以下代码：

function psnr_value=psnr(original_image,recon_image)
%PSNR Peak Signal-to-Noise Ratio.
%   PSNR_VALUE = PSNR(ORIGINAL_IMAGE,RECON_IMAGE) computes the peak 
%   signal-to-noise ratio between the original image ORIGINAL_IMAGE and
%   the reconstructed image RECON_IMAGE. Both images are assumed to
%   have values in the range [0, 1]. The output is in decibels (dB),
%   which can be calculated by 10*log10(psnr_value).
%
%   Example
%   -------------
%       original_image = imread('cameraman.tif');
%       recon_image = imnoise(original_image,'gaussian',0,0.01);
%       psnr_value = psnr(original_image,recon_image);
%
%   See also IMREAD, IMWRITE.

% Convert the image matrices to double precision 
original_image = im2double(original_image);
recon_image = im2double(recon_image);

% Compute the mean square error (MSE) between the two images
mse = mean(mean((original_image - recon_image).^2));

% Compute the maximum possible pixel value
max_pixel_value = 1;

% Compute the PSNR
psnr_value = 10*log10(max_pixel_value^2/mse);
end

该算法实现计算给定图像的峰值信噪比（PSNR），并将结果以分贝（dB）表示。

希望回答能对您有所帮助！