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#1 Posted : Saturday, December 10, 2011 6:22:07 PM(UTC)
razali84

Groups: Registered
Posts: 20


Hi,

i nee to know how to save annotation in color mode.

currently i havemanaged to make annotation on tif image with red color. unfortunately it is saved in grayscale.

please help.
 

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#2 Posted : Monday, December 12, 2011 7:18:00 AM(UTC)

Daoud  
Daoud

Groups: Registered
Posts: 256


Do you mean that you are burning (realizing) color annotations on an image, but that causes them to become grayscale?
In order to burn color annotation, the image should be 24-bit images so that when you realize the annotation on the image it (the image) will have the color pixels.

If you burn on a grayscale (or black and white) image, the resulting pixels will be limited to the colors of the image. That's why you should convert the image to full-color (24-bit) before burning.

 
#3 Posted : Tuesday, December 13, 2011 1:40:49 AM(UTC)
razali84

Groups: Registered
Posts: 20


can u give me a sample..please.

my situation is open tif image, then anotate the image such as insert red line.

but call codecs.save the red anotation become black.

 
#4 Posted : Tuesday, December 13, 2011 10:43:45 PM(UTC)

Daoud  
Daoud

Groups: Registered
Posts: 256


When you load (before you burn the object), make sure to supply the value of BitsPerPixel as 24 and don't leave it to the default.

This means use an overload of RasterCodecs.Load() method that takes a parameter named bitsPerPixel, such as this:
codecs.Load("file.tif", 24, CodecsLoadByteOrder.Bgr, 1, 1)

 
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