L_BlurDetectionExt

Summary

Detects obstruction on the bitmap including blur, glare and reflection.

Syntax

#include "l_bitmap.h"

L_LTIMGCOR_API L_INT L_BlurDetectionExt(pBitmapOrginal, pOptions, uFlags)

Parameters

pBITMAPHANDLE pBitmapOrginal

Pointer to the bitmap handle referencing the bitmap to perform the detection on.

BLURDETECTIONOPTIONS *pOptions

Pointer to BLURDETECTIONOPTIONS structure containing the specified options for the detection.

L_UINT uFlags

Reserved for future use. Pass 0.

Returns

Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.

Comments

Reports an obstructed regions on the bitmap related to blur, glare and reflection.

This function detects blur as well as any glare or reflection, while L_BlurDetection reports the overall blurriness of the bitmap.

Note that heavily saturated images may return a reflection mask with a high amount of reflection.

When the blur detection options specified by pOptions is no longer needed, free it by calling L_FreeBlurDetectionOptions.

Required DLLs and Libraries

Platforms

Win32, x64, Linux.

See Also

Functions

Topics

Example

This example detects obstruction on the provided BITMAPHANDLE including blur, glare, and reflection.

L_INT BlurDetectionExtExample(pBITMAPHANDLE pBmp) 
{ 
   L_INT nRet; 
   L_INT nGlareZones; 
   BLURDETECTIONOPTIONS blurOptions = { 0 }; 
 
   /* Set the options for blur detection */ 
   blurOptions.rcROI = {0, 0, pBmp->Width, pBmp->Height }; // This will detect blur on the entire bitmap 
   blurOptions.dBlurThreshold = 0.6; 
 
   /* Apply detection */ 
   nRet = L_BlurDetectionExt(pBmp, &blurOptions, 0); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   nGlareZones = blurOptions.GlareOptions.nZonesCount; 
  
   /* Save the detected masks */ 
   if (blurOptions.ReflectionOptions.pReflectionMask != NULL) 
      L_SaveBitmap(L_TEXT("./reflection.bmp"), blurOptions.ReflectionOptions.pReflectionMask, FILE_BMP, 24, 0, NULL); 
 
   if (blurOptions.GlareOptions.pMaskBitmap != NULL) 
      L_SaveBitmap(L_TEXT("./glare.bmp"), blurOptions.GlareOptions.pMaskBitmap, FILE_BMP, 24, 0, NULL); 
 
   /* Free blur options */ 
   L_FreeBlurDetectionOptions(&blurOptions); 
 
   return nRet; 
} 

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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.