Convertir une image en un tableau RGB de valeur [0,255]

Bonjour!
je suis débutant sur Labview et je veux faire le traitement d'image . J'ai un programme que j'ai téléchargé sur internet qui simule un filtre de wiener Mais l'entré est un tableau de RBG , je veux prendre n'importe quelle image et lui appliquée ce filtre ; comment je peux faire ??
ci-joint le programme utilisé .
Merci
Attachments:
01.Wiener Filter - Color.vi ‏2911 KB

LabVIEW fait la lecture d'un image (fichier) jpeg, bmp, ou png en utilisant U8. La fonction Wiener ne semble pas aimer les U8, mais plutot les doubles ayant des fractions, pas des nombres comme: 234.000, 543.000, etc.
J'ai ameliorer la fonction qui converti l'image en une matrice 3D pour des images plus amples. Voir ci dessous.
Tu peux savegarder le fichier png sur ton ordi et "dragger" (je pense que ce n'est pas la bonne expression) le fichier png dans ton diagramme et automatiquement, tu auras le code.
J'ai oublier d'enlever les fils allant ailleurs dans le code avant de faire un snippet...
Attachments:
jpeg2-3Darray.png ‏42 KB

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Convertir une image "Grayscale I16" en "RGB U64"

Bonjour,
je cherche depuis un petit moment sur tous les forums que je connais, et je ne trouve pas de réponse à mon besoin, à savoir convertir une image en niveaux de gris de 16 bits en RGB 64 bits. J'ai réussi à le faire en 32 bits, mais la dégradation est trop importante pour mes besoins.
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Si vous souhaitez, voici le VI que j'essaye de faire.
Il marche très bien en grayscale 8bits => RGB 32 bits, mais pas en Grayscale 16 bits => RGB 64 bits...
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Attachments:
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calcul.vi ‏9 KB

J'ai réussi à éliminer les erreurs citées précedemment.
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Presque tout est dans le titre
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Je cherche désespéremment une façon de faire mais j'avoue que je tourne un peu en rond.
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Bonjour Bysbobo,
Je ne suis pas exactement sûr de comprendre ce que tu veux faire. Pourrais-tu illustrer avec des copies d'écran?
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Bonjour,
Je souhaite faire l'acquisition d'image issu d'une kinect de microsoft puis de comparer la 1 ere image acquise avec toutes celles qui suivront.
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Pièces jointes :
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J'ai réussi à éliminer les erreurs citées précedemment.
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Pièces jointes :
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Converting RGB images (sRGB or Adobe RGB) to 709 color space.

I'm trying to determine the correct way to convert RGB images (sRGB or Adobe RGB) to 709 color space. I can't just use the "covert to profile" function to do this because it does not produce results that fall within the 16 to 235 range that 709 dictates. I've read that you can simply use the "Levels" adjustment and change the output levels to 16 to 235. While this would clearly compress the luminance to the correct range, I'm not entirely clear if the end result would be a proper conversion (i.e. if color and gamma, for example, would be technically correct.)
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(1)
http://en.wikipedia.org/wiki/Rec._709
(2)
http://en.wikipedia.org/wiki/Rec._601
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as found by Profile Inspector. There is no clipping.
By the way, that`s the internal profile name, I don't know the file name of the profile.
Softproofing, source in sRGB, target HDTV(Rec.709), without clipping:
With numbers not preserved: no change of the appearance, as expected.
With numbers preserved: shows the effect of different effective gammas.
Your questions are very clear and I'm not sure whether my comments help. The information
in the internet is not convincing.
Best regards --Gernot Hoffmann

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Hello
I am trying to create an example of how colours are made up so I am splitting channels, colorising and then printing the individual colour layers RGB and CYMK on to transparency and then layering them on a light box.
I am able to convert to duo tone by doing the following things:
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if I save the cymk duotone images they just revert to a flat image of the target colour, all of the detail is lost see below
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I am close to self harm just now as it makes no sense to me.
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Thanks

Quite frankly I don’t understand the procedure you explain.
Could you post screenshots to illustrate the steps?
If I try to change the image back to rgb or cymk, the image goes blocky, see below
That looks like a problem of its own.
Does turning off »Use Graphics Processor« in the Performance Preferences and restarting Photoshop have any bearing on the issue?
Otherwise you might want to run some general trouble-shooting routines:
http://blogs.adobe.com/crawlspace/2012/07/photoshop-basic-troubleshooting-steps-to-fix-mos t-issues.html
Though if it’s bad RAM …

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Try this:
public int countColors(String filename) throws IOException {
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int height = image.getHeight();
int width = image.getWidth();
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
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Hi,
I have black&white scans of public domain books (image format). I use an OCR software to convert them to indexable PDFs (image+text format). However, the OCRed PDFs are insanely big: a 27 MB scanned PDF leads to an indexable PDF of 728 MB! And unfortunately, my OCR software doesn't have output settings, so I have to find a way to compress the files using Adobe Acrobat 9 Pro.
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I mentioned "bitmaps", because when I open the original PDF and right-click a random page and select "Modify image..." and open the image in Photoshop, the mode is set to "Bitmap mode": meaning 1-bit mode, containing either black or white pixels. However, when I do "Modify image..." for the OCRed PDF, the mode is set to "RGB Color Mode". I think this explains, in part, the huge size of the OCRed PDF.
Maybe this table will make it more clear:
Original PDF (Bitmap Mode, 132 dpi)
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OCRed PDF (RGB Color Mode, 300 dpi)
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Segmenter une image en 4 couleurs sous Vision

Bonjour,
J'ai une image que j'aimerais segmenter en 4 couleurs : rouge, jaune, vert et bleu avec des seuillages en RGB pour avoir uniquement 4 couleurs sur ma photo.
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De plus, je souhaiterais remplir les trous noirs. Et pour finir, j'aimerais découper mon image en 10 zones par exemple (comme une cible idéalement) et lui appliquer la couleur moyenne sur chacune de ces zones (Zone 1 Rouge si plus de pixels Rouge que Jaune/Vert/Bleu)
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I have an image which I want in 4 colors : red, yellow, green and blue with thresholdes in RGB to have only 4 colors on my photo.
I try with Color Segmentation Setup and Class Labels but I don't have a good result.
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Attachments:
prof_1_1_060_0000_0180_00_result.jpg ‏619 KB

Hello,
I imagine that you looked before to the exemple in LabVIEW "Color segemntation "? http://zone.ni.com/reference/en-XX/help/372916J-01/nivisionconcepts/color_segmentation/
Here is a link of a segmentation tool which could be helpful to you project : http://www.ni.com/example/28139/en/
Regards,
Maxime G. | Application Engineer
National Instruments France
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Journées Techniques dans 10 villes en France, du 4 au 20 novembre 2014

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I can get the A,R,G,B of the image easily enough, but I don't know how to transform these into seperate Images or PlanarImages.
Cheers,
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The following should do it
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I would split the image into colour bands after you get it into the
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PLEASE HELP!!! URGENT!!!! convert a jpg CMYK to jpg RGB

Hello i need to convert to image jPG CMYK to jpg RGB..y try with this code:
<code>
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.....>
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try {
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pb.addSource(op);
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// -- Convert CMYK to RGB
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ColorModel rgb_cm =
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rgb_icp,
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true,
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</code>
With this code work but de image jpg RGB result is not have the same color that of the original jpg CMYK...the image result (jpg RGB ) is very dark is almost black color....please i need urgen to resolve this
if you kwon whta happends with my code thanks and if exist other code that you have...thanks
thanks
Rafael

I don't know anything about this topic, but I've seen a lot of posts about it.
http://www.google.com/search?q=convert+cmyk+site:forum.java.sun.com&sourceid=opera&num=0&ie=utf-8&oe=utf-8

HELP!!! URGENT!!!! convert a jpg CMYK to jpg RGB

Hello i need to convert to image jPG CMYK to jpg RGB..y try with this code:
<code>
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.....>
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pb.setParameter("colormodel", rgb_cm);
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ex.printStackTrace();
return op;
</code>
With this code work but de image jpg RGB result is not have the same color that of the original jpg CMYK...the image result (jpg RGB ) is very dark is almost black color....please i need urgen to resolve this
if you kwon whta happends with my code thanks and if exist other code that you have...thanks
thanks
Rafael

thanks but I need to pass a CMYK to RGB

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I have a written servlet that uses Adobe LiveCycle API to convert files to PDF. This works. I have a problem with one image (.BMP) for which the PDF conversion fails. I then tried converting the image to PDF using Adobe Acrobat. I see the following error:
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The image scaling library does have a BiCubicFilter in it so I'll experiment around with them and see what happens. As for the imageIO library I think it accepts Exif image types, but still for some reason it just doesn't like Adobe Photoshop types. Maybe its the colour map it doesn't like I just can't seem to work out what's wrong which is slightly frustrating but looking round to see if I can find an answer

Convertir une image en un tableau RGB de valeur [0,255]

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