ImgGetBlackValue

Prototype

IntColor:=ImgGetBlackValue(intImageHandle)

Description

Returns the code corresponding to the black color for the shown image. It's useful in monochrome image for understanding if black  code is '1' or '0'.

Parameters

intImageHandle: integer value corresponding to the image handle.

Returned value

IntColor: integer value showing the black color of the image.

Notes

None.

Example

// Transforming image to monochrome format if required

nBits:=ImgGetBitsPixel(_CurrentImage);

if nBits>1 then ImgThreshold(_CurrentImage,127);

// Extract the width and height

width:=ImgGetWidth(_CurrentImage);

height:=ImgGetHeight(_CurrentImage);

// Value for black color

color:=ImgGetBlackValue(_CurrentImage);

// Printing a black border around current image

for x:=0 to width-1 do

 begin

         ImgSetPixel(_CurrentImage,x,0,color);

                 ImgSetPixel(_CurrentImage,x,height-1,color);

       end;

for y:=0 to height-1 do

 begin

         ImgSetPixel(_CurrentImage,0,y,color);

         ImgSetPixel(_CurrentImage,width-1,y,color);

 end;

ApplicationLog('Drawing');