while processing a code for Image enhnacement..i am getting the following error could you please explain..?

1 次查看（过去 30 天）

显示更早的评论

Rajat 2013-4-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/71449-while-processing-a-code-for-image-enhnacement-i-am-getting-the-following-error-could-you-please-exp

评论： Image Analyst 2015-2-8

*Error using rgb2gray>parse_inputs (line 88) RGB must be a m x n x 3 array.

Error in rgb2gray (line 35) X = parse_inputs(varargin{:});*

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Rajat 2013-4-10

I was intially trying to input some urban area image with .img format but Matlab is not supporting..??..how can i input coloured input image of urban area and extract building

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Iman Ansari 2013-4-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/71449-while-processing-a-code-for-image-enhnacement-i-am-getting-the-following-error-could-you-please-exp#answer_81721

编辑：Iman Ansari 2013-4-10

The error says why. Your input is not RGB. Try:

size('your input')

2 个评论
显示无隐藏无

Rajat 2013-4-10

thanx for reply..but i want to actually input a urban area satlelite image..but wen i input.img image...it doesnot support

Rajat 2013-4-10

below is code for image segmentation could you please help in doin necessary changes, so that i can extract building from satellite image

im1=imread('D:\12.jp2'); %im1=rgb2gray(im); im1=medfilt2(im1,[3 3]); %Median filtering the image to remove noise% BW = edge(im1,'sobel'); %finding edges [imx,imy]=size(BW); msk=[0 0 0 0 0; 0 1 1 1 0; 0 1 1 1 0; 0 1 1 1 0; 0 0 0 0 0;]; B=conv2(double(BW),double(msk)); %Smoothing image to reduce the number of connected components L = bwlabel(B,8);% Calculating connected components mx=max(max(L)) % There will be mx connected components.Here U can give a value between 1 and mx for L or in a loop you can extract all connected components % If you are using the attached car image, by giving 17,18,19,22,27,28 to L you can extract the number plate completely. [r,c] = find(L==17); rc = [r c]; [sx sy]=size(rc); n1=zeros(imx,imy); for i=1:sx x1=rc(i,1); y1=rc(i,2); n1(x1,y1)=255; end % Storing the extracted image in an array %figure,imshow(im); figure,imshow(im1); figure,imshow(B); figure,imshow(n1,[]);

请先登录，再进行评论。

Image Analyst 2013-4-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/71449-while-processing-a-code-for-image-enhnacement-i-am-getting-the-following-error-could-you-please-exp#answer_81722

在 MATLAB Online 中打开

After you call this line

im1 = imread('D:\12.jp2');

put these lines

[rows, columns, numberOfColorChannels] = size(im1) % No semicolon
if numberOfColorChannels > 1
  % Do this only if you want to convert to gray level.
  im1 = rgb2gray(im1);
  % Optionally, can take the green channel instead of the above line
  % im1 = im1(:, :, 2);
end

What does this print out in the command window?

6 个评论
显示 4更早的评论隐藏 4更早的评论

Joe Torr 2015-2-8

I tried your step and it gave me the same error. I wonder if it's the fact that my image is .tiff have something to do with it. I'm just trying a basic step of getting only black and white colors. I started to try gray but that did'nt work as well.