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Article View: comp.soft-sys.khoros
Article #1008

Trouble displaying color images

#1008
From: Jeff Hehn
Date: Mon, 23 Nov 1992 17:07
63 lines
2777 bytes
Hello group,
	I am relatively new to khoros and have been writing some code to 
get color images from our framegrabber (on a PC) into the viff format, and for the 
most part I have been successful. I am able to save viff images in greyscale
and RGB format and display them using khoros on a Sparc II.  When
I try to use an IHS (Intensity, Hue, Saturation) model however, it seems to just 
display it as a greyscale image. I extracted the three bands and the data seems to
represent the HSI model. Has anyone else had experience with trying to display
images in an IHS model. A vfileinfo of an image I saved in the hsi model reveals:
______________________________________________________

File Name: tapehsi.xv

File Type: khoros image file format
KHOROS identifier: -85
KHOROS version/release: 3.1

                          Description:

­­­£ÝD­£¸n£Àn­£ºn£ÂnÆÆ]­¢fnЭ>ä~
                        End Description

  File data storage type: BYTE
  Number of pixels per band: 256 rows by 256 columns or 65536 pixels
  Pixel subrow size: 0
  Number of images per file: 1
  Number of bands per image pixel: 3
  Subimage: YES (coordinates in original File: (0,0) to (255,255)).
  File Data Compression: NONE
  Pixel size: 0 (x) by 0 (y) meters
  Machine dependency: NS32000 or MIPS(DEC 3100)
  Color space model: IHS
  Data Band Mapping scheme: NONE

The following map fields are not used because the map scheme is set to none

   Map storage type: NONE
   Map row size: 0
   Map col size: 0
   Map subrow size: 0
   Maps per cycle: 0
   Enable the Map: OPTIONAL

  Location of Data: IMPLICIT

The following fields are not used because the location type is implicit

   Dimension Location: 0D (NONE)
___________________________________________________________

I would certianly appreciate any comments or ideas to help me display
images using a IHS model. 
Thanks,
-JLH


__________________________________________________________________
  Jeff L. Hehn			Dept. of Agricultural Engineering
  hehn@ccu.umanitoba.ca		University of Manitoba
  ph:204-474-6298	
	"Who's that man with a back-pack shaped like my wife"
					- Al Bundy
__________________________________________________________________
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From: hehn@ccu.umanitoba.ca (Jeff Hehn)
Subject: Trouble displaying color images
Message-ID: <By6I81.58E@ccu.umanitoba.ca>
Sender: news@ccu.umanitoba.ca
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Reply-To: hehn@ccu.umanitoba.ca
Organization: The Univeristy of Manitoba.
Date: Mon, 23 Nov 1992 17:07:13 GMT
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