Hello, how to read a BMP image in MATLAB?

Question

Bal Poudel 2016-6-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/293143-hello-how-to-read-a-bmp-image-in-matlab

评论： Dinesh Iyer 2016-7-19

current.BMP

I am trying to read the BMP image(160 x 120 x 24 BPP) produced by FLIR Lepton Sensor in MATLAB. I have also attached the BMP image here.I'm using MATLAB R2016a...I used the following command.

Background=imread('...\LeptonTest\current.BMP');

I got the following error:

Error using imbmpinfo>readBMPInfo (line 106)
Header size was 56 bytes.  Only values of 12, 40, 64, 108, or 124 are supported.
Error in imbmpinfo (line 23)
metadata = readBMPInfo(fid, metadata);
Error in readbmp (line 14)
info = imbmpinfo(filename);
Error in imread (line 415)
  [X, map] = feval(fmt_s.read, filename, extraArgs{:});

Please some body help me to fix this problem.

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Answer 1

Dinesh Iyer 2016-7-5

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https://ww2.mathworks.cn/matlabcentral/answers/293143-hello-how-to-read-a-bmp-image-in-matlab#answer_227780

This appears to be a bug with IMREAD. The BMP file appears to use a BI_BITFIELD compression to store the image data which appears to be be tripping up IMREAD.

Sorry about this. Will update once a patch is ready.

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Answer 2

Dinesh Iyer 2016-7-19

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https://ww2.mathworks.cn/matlabcentral/answers/293143-hello-how-to-read-a-bmp-image-in-matlab#answer_229039

The patch with the fix for this issue can be found at:

http://www.mathworks.com/support/bugreports/1432749

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Image Analyst 2016-7-19

Sorry, I just thought it was a cute graphic. Actually I haven't tried the patch since I think it's for a fairly rare type of image that I don't use. Anyway, is this fix going to make it into the R2016b version? If not, I guess it would also have to be applied after installing R2016b.

Dinesh Iyer 2016-7-19

This will not be making it to 16b but the patch in the link should work for 16b as well.

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Answer 3

Geoff Hayes 2016-6-30

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https://ww2.mathworks.cn/matlabcentral/answers/293143-hello-how-to-read-a-bmp-image-in-matlab#answer_227259

在 MATLAB Online 中打开

Bal - I get the same error when using R2014a. However, I was able to load this image into MATLAB as follows

>> open('current.BMP');

which would launch the Import Wizard. Pressing the Finish button created a variable called current which is a 120x160x3 array which I could display using the image command.

I'm not sure why there is a difference between using open and imread (i.e. why does open seem to support the 56 byte header but imread does not). Perhaps this should be logged as a bug.

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Geoff Hayes 2016-6-30

在 MATLAB Online 中打开

Hi Bal - I'm not sure why the import wizard would not launch on your computer. What happens if you try to open by right-clicking on the file name in the MATLAB file browser. Or try,

uiimport('current.bmp')

Image Analyst 2016-7-5

open() on my computer also opens the binary data into a text editor window, like for bal. uiimport() did bring up a wizard, but I don't know what to do with it:

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