C++ (Cpp) FreeImage_Threshold Examples

Example #1

File: fipImage.cpp Project: MrMasterplan/PIC-stuff

BOOL fipImage::threshold(BYTE T) {
	if(_dib) {
		FIBITMAP *dib1 = FreeImage_Threshold(_dib, T);
		return replace(dib1);
	}
	return FALSE;
}

Example #2

File: SaveImage.cpp Project: ClockMan/edytorgraficzny

//---------------------------------------------------------------------------
FIBITMAP* BitrateConversion(FIBITMAP* image, TYPE bit_per_pixel)
{
	ConvertType convertTab[] =
	{
		FreeImage_ConvertTo4Bits,
		FreeImage_ConvertTo8Bits,
		FreeImage_ConvertTo16Bits555,
		FreeImage_ConvertTo24Bits,
		FreeImage_ConvertTo32Bits
	};
	
	switch (bit_per_pixel)
	{
		case bit_1:
			return FreeImage_Threshold(image,128);
		case bit_4:
			return convertTab[0](image);
		case bit_8:
			return convertTab[1](image);
		case bit_16:
			return convertTab[2](image);
		case bit_24:
			return convertTab[3](image);
		case bit_32:
			return convertTab[4](image);
	}
	
	return 0;
}

Example #3

File: FreeImageAlgorithms_MorphologyTests.cpp Project: glennpierce/Fia

static void
TestFIA_ErosionTest(CuTest* tc)
{
	const char *file = TEST_DATA_DIR "\\morpholology_test.bmp";

	FIBITMAP *dib1 = FIA_LoadFIBFromFile(file);
	
	CuAssertTrue(tc, dib1 != NULL);
	
	FIBITMAP *threshold_dib = FreeImage_Threshold(dib1, 20);

	CuAssertTrue(tc, threshold_dib != NULL);

	FIBITMAP *threshold_8bit_dib = FreeImage_ConvertTo8Bits(threshold_dib);

	CuAssertTrue(tc, threshold_8bit_dib != NULL);

	FIABITMAP *border_dib = FIA_SetBorder(threshold_8bit_dib, 2, 2
        , BorderType_Constant, 0.0);

	PROFILE_START("ErosionFilter");

	FilterKernel kernel = FIA_NewKernel(2, 2, kernel_values, 1.0);

	FIBITMAP* result_dib = FIA_BinaryErosion(border_dib, kernel);

	CuAssertTrue(tc, result_dib != NULL);

	PROFILE_STOP("ErosionFilter");

	FIA_SaveFIBToFile(result_dib, TEST_DATA_OUTPUT_DIR "\\erosion_result.jpg", BIT24);

	result_dib = FIA_BinaryInnerBorder(threshold_8bit_dib);

	FIA_SimpleSaveFIBToFile(result_dib, TEST_DATA_OUTPUT_DIR "morphology/inner_border_result.bmp");

	FreeImage_Unload(dib1);
	FreeImage_Unload(threshold_dib);
	FreeImage_Unload(threshold_8bit_dib);
	FIA_Unload(border_dib);
	FreeImage_Unload(result_dib);
}

Example #4

File: FreeImageAlgorithms_MorphologyTests.cpp Project: glennpierce/Fia

static void
TestFIA_ClosingTest(CuTest* tc)
{
	const char *file = TEST_DATA_DIR "\\morpholology_test.bmp";

	FIBITMAP *dib1 = FIA_LoadFIBFromFile(file);
	
	CuAssertTrue(tc, dib1 != NULL);
	
	FIBITMAP *threshold_dib = FreeImage_Threshold(dib1, 20);

	CuAssertTrue(tc, threshold_dib != NULL);

	FIBITMAP *threshold_8bit_dib = FreeImage_ConvertTo8Bits(threshold_dib);

	CuAssertTrue(tc, threshold_8bit_dib != NULL);

	FIABITMAP *border_dib = FIA_SetBorder(threshold_8bit_dib, 2, 2
        , BorderType_Constant, 0.0);

	FilterKernel kernel = FIA_NewKernel(2, 2, kernel_values, 1.0);

	FIBITMAP* result_dib = FIA_BinaryClosing(border_dib, kernel);

	CuAssertTrue(tc, result_dib != NULL);

	FIA_SaveFIBToFile(result_dib, TEST_DATA_OUTPUT_DIR "\\closing_result.jpg", BIT24);

	// Test of convinience 3x3 function
	result_dib = FIA_Binary3x3Closing(threshold_8bit_dib);

	FIA_SimpleSaveFIBToFile(result_dib, TEST_DATA_OUTPUT_DIR "morphology/closing3x3_result.bmp");

	FreeImage_Unload(dib1);
	FreeImage_Unload(threshold_dib);
	FreeImage_Unload(threshold_8bit_dib);
	FIA_Unload(border_dib);
	FreeImage_Unload(result_dib);
}