[Scilab-users] Fwd: Re: scilab and tif-files

[Chin Luh Tan]

Hi Antoine, 



Great to hear that your function works well so quite some case, if you don't mind, could I put into coming IPCV release?



Thanks.



rgds,

CL


---- On Tue, 14 Jul 2020 17:52:13 +0800 P M <p.muehlmann at gmail.com> wrote ----


Hi Antoine,





This does help indeed...



with    tiff_get_image_prop()     I get the correct RGB-image from the TIf-file.



Thank you very much. 



Best Regards,

Philipp















Am Mo., 13. Juli 2020 um 08:25 Uhr schrieb Antoine Monmayrant <mailto:antoine.monmayrant at laas.fr>:

Houps,

I mailed Philipp directly, so here is a copy of my answer and
      available script to read a subset of TIFF.
 It might be useful for some of you...
 
 Antoine



-------- Forwarded Message --------Subject:

Re: [Scilab-users] scilab and tif-files


Date:

Sun, 12 Jul 2020 20:39:20 +0200


From:

Antoine Monmayrant mailto:antoine.monmayrant at laas.fr


To:

P M mailto:p.muehlmann at gmail.com






Hello Philipp,

I played a bit with tiff format a while ago (as none of the
        image processing toolboxes could be installed on my work
        computers).
 The long story short: one of our microscope is storing data in a
        format (*.ols) that is just tiff file with some metadata.
 I hacked a bit of the tiff specification to only support the
        subset of tiff used by this microscope.
 So it might not be exactly what you need, it depends on the tiff
        files you are using.
 But maybe it can help you design your own homemade solution.
Cheers,

Antoine

On 10/07/2020 11:52, P M wrote:

Dear experts,



I do have a tif-file....in fact: lot's of them and of
            different size.



Pixel values are:  

- red

- green

- white

- black



Now, I want to convert these files in Black/white images,
            such as:



- red pixels --> black

- green pixels --> white

- black pixels --> black

- white pixels --> black



in other words:    Only the green pixels are of interest.



Now, as I use IPCV:



- imread()...does not handle tif-files correctly

--> it does read the files, but the output is a
            boolean-matrix......that doesn't help



- tifread()...does only handle images with size 1024x1024
            ... doesn't help



Is there a way to read TIF-files into Scilab and keep the
            R-G-B-channels?





Thank you,

Philipp











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