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From: | Marco Vassallo |
Subject: | RE: need one more test in matlab for imformats |
Date: | Tue, 9 Jul 2013 08:51:52 +0200 |
> From: address@hidden > Date: Tue, 9 Jul 2013 02:59:54 +0100 > Subject: Re: need one more test in matlab for imformats > To: address@hidden > CC: address@hidden > > On 8 July 2013 18:26, Brandon Miles <address@hidden> wrote: > > Hi Carnë > > > > I found they were both 1x1 doubles, so they were not read. My output is > > below from Matlab 2012b, win XP: > > > > > > What are the values of img1 and img2? Is any of them the actual image > > (a large matrix) or the size of the filename? > > > > Brandon > > > >>> fmt = imformats ('bmp'); > > fmt.read = @(x) size(x); > > fmt.isa = @(x) true; > > imformats ('update', 'bmp', fmt); > > img1 = imread ('Test_BMP', 'bmp'); > > This should have been a jpeg file with no file extension, trying to > force a different format (bmp). Was Test_BMP a bmp or jpeg image with > no extension? I have tried with a .jpg file with and without file extension, but the result is always the same: >> fmt = imformats ('bmp'); fmt.read = @(x) size(x); fmt.isa = @(x) true; imformats ('update', 'bmp', fmt); img1 = imread ('DSC02538.jpg', 'bmp') fmt = imformats ('jpg'); fmt.read = @(x) size(x); fmt.isa = @(x) true; imformats ('update', 'jpg', fmt); img2 = imread ('DSC02538.jpg', 'jpg') img1 = 1 img2 = 1 >> whos Name Size Bytes Class Attributes fmt 1x1 1152 struct img1 1x1 8 double img2 1x1 8 double -------------------------------------------------- case without extension fmt = imformats ('bmp'); fmt.read = @(x) size(x); fmt.isa = @(x) true; imformats ('update', 'bmp', fmt); img1 = imread ('DSC02538', 'bmp') fmt = imformats ('jpg'); fmt.read = @(x) size(x); fmt.isa = @(x) true; imformats ('update', 'jpg', fmt); img2 = imread ('DSC02538', 'jpg') img1 = 1 img2 = 1 >> whos Name Size Bytes Class Attributes fmt 1x1 1152 struct img1 1x1 8 double img2 1x1 8 double ------------------------------------------------------------------ HTH Marco > > Thank you, > Carnë |
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