Real time Rgb2gray convert

3 views (last 30 days)
hey guys i want to know if it is possible to convert in real time a RGB form video to a gray Form.
I tried to use rgbgray function and min function but i wasn't able to get what i want
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
%===============================================================================
%activate the integrated camera
web = webcam('HD Webcam')
set(web,'Resolution','640x480')
preview(web)
pause(5)
img = snapshot(web)
imshow(img)
%===============================================================================
% Read in a demo image.
%grayImage= min(originalRGBImage, [], 3); % Useful for finding image and color map regions of image.
grayImage = rgbgray(web); % Useful for finding image and color map regions of image.
imshow(grayImage)
clear('web')

Accepted Answer

Image Analyst
Image Analyst on 31 May 2021
Edited: Image Analyst on 31 May 2021
You need to pass in the color image, not the webcam object. And you need to call rgb2gray(), not rgbgray().
rgbimage = snapshot(web)
grayImage = rgb2gray(rgbImage);
imshow(grayImage);
drawnow;
  3 Comments
Zakaria Boussaid
Zakaria Boussaid on 2 Jun 2021
thank you for this informative answer

Sign in to comment.

More Answers (0)

Categories

Find more on Convert Image Type in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!