PS 色调— —颜色梯度

提示：扫一扫查出行
【扫一扫了解最新限行尾号】
复制提示

clc; clear all; close all; addpath('E:\PhotoShop Algortihm\Image Processing\PS Algorithm'); I=imread('4.jpg'); Image=double(I)/255; [height, width, depth]=size(Image); rNW=1.0; gNW=0.0; bNW=0.0; rNE=1.0; gNE=1.0; bNE=0.0; rSW=0.0; gSW=0; bSW=1.0; rSE=0.0; gSE=1.0; bSE=0.0; Img_new=Image; for ii=1:height for jj=1:width fx = jj / width; fy = ii / height; p = rNW + (rNE - rNW) * fx; q = rSW + (rSE - rSW) * fx; r = ( p + (q - p) * fy ); r = min(max(r, 0), 1); p = gNW + (gNE - gNW) * fx; q = gSW + (gSE - gSW) * fx; g = ( p + (q - p) * fy ); g = min(max(g, 0) ,1); p = bNW + (bNE - bNW) * fx; q = bSW + (bSE - bSW) * fx; b = ( p + (q - p) * fy ); b = min(max(b, 0), 1); Img_new(ii, jj, 1)=r; Img_new(ii, jj, 2)=g; Img_new(ii, jj, 3)=b; end end imshow(Img_new); imwrite(Img_new, 'out.jpg');