Getting rows and columns of image
12 views (last 30 days)
Show older comments
I have color jepg image.
I got the following output for imfinfo
>> I=imfinfo('D:\images\im.jpg');
>> I
I =
Filename: 'D:\images\im.jpg'
FileModDate: '03-Jul-2008 01:10:24'
FileSize: 184721
Format: 'jpg'
FormatVersion: ''
Width: 500
Height: 500
BitDepth: 24
ColorType: 'truecolor'
FormatSignature: ''
NumberOfSamples: 3
CodingMethod: 'Huffman'
CodingProcess: 'Sequential'
Comment: {}
But when I try to get no of columns and rows from the matrix of the same image I got
I=imread('D:\images\im.jpg');
[r1 c1]=size(I);
>> r1
r1 =
500
>> c1
c1 =
1500
I am getting 500 which is correct rows but 1500 value for column. Why? Is this for 500 * 3 for 3 different channels?
0 Comments
Accepted Answer
Image Analyst
on 30 Sep 2016
Try this:
[rows, columns, numberOfColorChannels] = size(rgbImage);
For more on this, see Steve's blog: http://blogs.mathworks.com/steve/2011/03/22/too-much-information-about-the-size-function/
Don't use capital I for a variable name. It looks too much like a 1 (one) and an l (lower case L), plus it's not very descriptive.
More Answers (0)
See Also
Categories
Find more on Denoising and Compression 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!