block_matching.c File Reference

#include "motion.h"
#include <stdbool.h>
#include <math.h>
#include <string.h>
#include "esp_timer.h"

Functions
int	costFuncSAD (const uint8_t *currentImg, const uint8_t *refImg, int offset_curr, int offset_ref, size_t mbSize, size_t w)
	Computes the Sum of Absolute Difference (SAD) for the given two blocks . More...
uint8_t *	motionComp (const uint8_t *imgI, const MotionVector16_t *motionVect, size_t w, size_t h, size_t mbSize)
	Compute motion compensated image's PSNR . More...
bool	motionEstARPS (MotionEstContext *c)
	Perform Adaptive Rood Pattern Search algorithm. More...

Variables
const int	SDSP [6][2]

Detailed Description

Block matching algo

Author

Thomas Pegot

Function Documentation

costFuncSAD()

int costFuncSAD	(	const uint8_t *	currentImg,
		const uint8_t *	refImg,
		int	offset_curr,
		int	offset_ref,
		size_t	mbSize,
		size_t	w
	)

Computes the Sum of Absolute Difference (SAD) for the given two blocks
.

\[ SAD = \sum_{i=0}^{n-1}\sum_{j=0}^{n-1} |Cur_{ij}-Ref_{ij}| \]

Parameters

currentImg	: img for which we are finding the SAD
refImg	: img which the SAD is being computed
offset_curr	: offset applied to img current
offset_ref	: offset applied to ref img
mbSize	: the side of the 2 square blcks
w	: width of images

Returns

the SAD for the 2 blks *

Variable Documentation

SDSP

const int SDSP[6][2]

Initial value:

= {{0, -1},
                        {-1, 0},
                        {0, 0},
                        {1, 0},
                        {0, 1},
                        {1, 1}}