SSE optimized functions.
Functions | |
void | image_SSSE3_scale_half_3c8u (const uint8_t *in, uint8_t *out, int w, int h) |
Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3. More... | |
template<bool IS_RGB> | |
void | private_image_SSSE3_rgb_or_bgr_to_gray_8u (const uint8_t *in, uint8_t *out, int w, int h) |
void | image_SSSE3_bgr_to_gray_8u (const uint8_t *in, uint8_t *out, int w, int h) |
Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B. More... | |
void | image_SSSE3_rgb_to_gray_8u (const uint8_t *in, uint8_t *out, int w, int h) |
Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B. More... | |
void | image_SSE2_scale_half_1c8u (const uint8_t *in, uint8_t *out, int w, int h) |
Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3. More... | |
void | image_SSE2_scale_half_smooth_1c8u (const uint8_t *in, uint8_t *out, int w, int h) |
Average each 2x2 pixels into 1x1 pixel (arithmetic average) More... | |
float | KLT_response_optimized () |
KLT score at a given point of a grayscale image. More... | |
void image_SSE2_scale_half_1c8u | ( | const uint8_t * | in, |
uint8_t * | out, | ||
int | w, | ||
int | h | ||
) |
Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3.
Definition at line 40 of file CImage_SSE2.cpp.
References MRPT_ALIGN16.
void image_SSE2_scale_half_smooth_1c8u | ( | const uint8_t * | in, |
uint8_t * | out, | ||
int | w, | ||
int | h | ||
) |
Average each 2x2 pixels into 1x1 pixel (arithmetic average)
Definition at line 70 of file CImage_SSE2.cpp.
References KLT_response_optimized(), and MRPT_ALIGN16.
void image_SSSE3_bgr_to_gray_8u | ( | const uint8_t * | in, |
uint8_t * | out, | ||
int | w, | ||
int | h | ||
) |
Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B.
Definition at line 208 of file CImage_SSE3.cpp.
void image_SSSE3_rgb_to_gray_8u | ( | const uint8_t * | in, |
uint8_t * | out, | ||
int | w, | ||
int | h | ||
) |
Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B.
Definition at line 221 of file CImage_SSE3.cpp.
void image_SSSE3_scale_half_3c8u | ( | const uint8_t * | in, |
uint8_t * | out, | ||
int | w, | ||
int | h | ||
) |
Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3.
Definition at line 37 of file CImage_SSE3.cpp.
References MRPT_ALIGN16.
float KLT_response_optimized | ( | ) |
KLT score at a given point of a grayscale image.
This function is not manually optimized for SSE2 but templatized for different window sizes such as the compiler can optimize automatically for that size.
Only for the most common window sizes this templates are instantiated (W=[2-16] and W=32 ), falling back to a generic implementation otherwise. The next figure shows the performance (time for KLT_response() to compute the score for one single pixel) for different window sizes.
Referenced by image_SSE2_scale_half_smooth_1c8u().
void private_image_SSSE3_rgb_or_bgr_to_gray_8u | ( | const uint8_t * | in, |
uint8_t * | out, | ||
int | w, | ||
int | h | ||
) |
Definition at line 90 of file CImage_SSE3.cpp.
References BUILD_128BIT_CONST.
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