#include "ltimgkrn.h"
L_LTIMGKRN_API L_INT L_ImgKrnDetectGlare(bitmap, glareArea)
Detects and obtains the glare zone in an image.
Pointer to the bitmap handle referencing the bitmap to be processed.
Pointer to a variable to be updated with the detected glare zone.
The glare area can be an empty rectangle if no glare is detected.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
This function can be used as a pre-processing step to check an image before recognition.
Note: All functions with the L_ImgKrn prefix modify the underlying properties of the input BITMAPHANDLE, including but not limited to:
To avoid BITMAPHANDLE property fidelity loss, pass a copy of your BITMAPHANDLE to all L_ImgKrn* functions.
Required DLLs and Libraries
Win32, x64, Linux.
This example loads a bitmap and detects the glare zone.
L_INT CopyImageExample(L_VOID)
{
L_INT ret;
BITMAPHANDLE bitmap; /* Bitmap handle to hold the loaded image. */
L_RECT glareArea;
/* Load the bitmap */
ret = L_LoadBitmap(MAKE_IMAGE_PATH(TEXT("Glare.jpg")), &bitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
if (ret != SUCCESS)
return ret;
/* Apply L_ImgKrnDetectGlare and find glare region */
ret = L_ImgKrnDetectGlare(&bitmap, &glareArea);
// Check if glare detected
if (ret == SUCCESS)
{
if(L_Rect_IsEmpty(&glareArea))
MessageBox(NULL, TEXT("No glare detected"), TEXT("L_ImgKrnDetectGlare"), MB_OK);
else
MessageBox(NULL, TEXT("Glare detected in the input image."), TEXT("L_ImgKrnDetectGlare"), MB_OK);
}
L_FreeBitmap(&bitmap);
return ret;
}
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