I am doing a project which is image processing. The image ia captured using TRDB_D5M. I need to bound an red color object using bounding box. The VGA controller from the CD does not show oCurrentX and oCurrentY. How do i control the iPosX and iPosY of the pixel. Which module should i connect to if there is not from VGA controller?
This is the sameple code which i find in journal..
Pixel Detection by Threshold
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// value > Threshold => pixel belongs to BLOB
if (( iVGA_R + iVGA_G + iVGA_B ) > threshold )
begin
// check if pixel belongs to current frame
if( currentFrame == countFrames )
begin
// compute coordinates for bounding box
if( iPosX < minX ) minX = iPosX ;
if( iPosX > maxX ) maxX = iPosX ;
if( iPosY < minY ) minY = iPosY ;
if( iPosY > maxY ) maxY = iPosY ;
end
end // end threshold
// compute difference between minX , minY , maxX , maxY
diffX = (( maxX - minX ) > >1); //>>1 == division by 2
diffY = (( maxY - minY ) > >1); //>>1 == division by 2
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.
// send BLOB attributs to output , if new frame starts
if( currentFrame < countFrames )
begin
othrPosX = ( minX + diffX );
othrPosY = ( minY + diffY );
currentFrame = countFrames ;
maxX = 0;
minX = 1000;
maxY = 0;
minY = 1000;
end
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