I have applied histogram on the v-component of hsv image how can i now convert it back to colour image

1 次查看（过去 30 天）
sachit
sachit 2014-12-20
回答： Image Analyst 2014-12-20
i have selected a color image, after reading it i have converted it to hsv image, then i have extracted its v-component, then applied histogram to the v-component, after this the image is of 256*1 matrix. how i now obtain the color image using the enhanced value of v after combining h s & v components
X = imread('4.1.05.tiff'); % read the image [o k]=size(X); S=rgb2hsv(X); [m n]=size(S); subplot(2,2,1) imshow(S) %convert the colour image to HSV V=S(:,:,3); subplot(2,2,2) imshow(V) subplot(2,2,3) [COUNTS,f] = imhist(V) stem(f,COUNTS); figure() imshow([COUNTS,f])

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2014-12-20
Try this:
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 20;
rgbImage = imread('peppers.png'); % read the image
[rows1, columns1, numberOfChannels1] = size(rgbImage);
subplot(2, 2, 1);
imshow(rgbImage);
title('RGB Image', 'FontSize', fontSize);
hsvImage=rgb2hsv(rgbImage);
[rows2, columns2, numberOfChannels2]=size(hsvImage)
subplot(2, 2, 2);
imshow(hsvImage) % Convert the colour image to HSV
title('HSV image, coded as RGB (meaningless)', 'FontSize', fontSize);
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
H = hsvImage(:,:,1);
S =hsvImage(:,:,2);
V = hsvImage(:,:,3);
subplot(2, 2, 3);
imshow(V)
title('V Channel', 'FontSize', fontSize);
subplot(2, 2, 4);
[COUNTS,f] = imhist(V)
bar(f,COUNTS);
grid on;
title('V Channel Histogram', 'FontSize', fontSize);
figure()
improvedHSVImage = cat(3, H, S, mat2gray(V));
improvedRGBImage = hsv2rgb(improvedHSVImage);
imshow(improvedRGBImage)
title('Improved RGB Image', 'FontSize', fontSize);
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);

类别

在 Help Center 和 File Exchange 中查找有关 Image Processing and Computer Vision 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by