llips_motiondetect.h File Reference

Motion detection fucntions. More...

Go to the source code of this file.

Functions
CPU_CHAR	search_diff (CPU_INT16U tolerance, CPU_INT16U quantity, t_img *img_in1, t_img *img_in2, t_img *img_out, t_area *change_img)
	Search for difference between two images, using given tolerance and quantity change criteria. More...
t_vect	evaluate_move (t_img *p_img_base, t_img *p_img_target, t_area area_1, t_area area_2, t_vect *p_movement_origin)
	Evaluate mouvement direction between three sequencial images that have been previously processed by search_diff() More...
CPU_CHAR	search_diff_x (CPU_INT16U tolerance, CPU_INT16U quantity, t_img *img_in1, t_img *img_in2, t_img *img_out, t_area *change_img)
	Search for difference between two images, using given tolerance and quantity change criteria, but trying to find an horizontal move. More...
t_pixel	look_for_match (t_img *img_in1, t_img *img_in2, CPU_INT16U areasize, t_pixel area_from_1, CPU_INT16U raw_tolerance)
	Try to find a correspondance from an area from image 1 in image 2. More...

Detailed Description

Motion detection fucntions.

Author

MPE

Definition in file llips_motiondetect.h.

Function Documentation

t_vect evaluate_move	(	t_img *	p_img_base,
		t_img *	p_img_target,
		t_area	area_1,
		t_area	area_2,
		t_vect *	p_movement_origin
	)

Evaluate mouvement direction between three sequencial images that have been previously processed by search_diff()

Parameters

p_img_base	t_img* - image used to create ouput image header
p_img_target	t_img* - output image containing both area of change
area_1	t_area - change between image 1 and 2
area_2	t_area - change between image 2 and 3
p_movement_origin	t_vect* - relative vector of the displacement from center of image

Returns

t_vect - absolute vector of the displacement

Definition at line 141 of file llips_motiondetect.c.

t_pixel look_for_match	(	t_img *	img_in1,
		t_img *	img_in2,
		CPU_INT16U	areasize,
		t_pixel	area_from_1,
		CPU_INT16U	raw_tolerance
	)

Try to find a correspondance from an area from image 1 in image 2.

Warning

NOT FUNCTIONNAL

Parameters

img_in1	t_img* - first image
img_in2	t_img* - second image
areasize	CPU_INT16U - size of research
area_from_1	t_pixel - what to look for
raw_tolerance	CPU_INT16U - tolerance in % between two pixel

Returns

t_pixel

Definition at line 338 of file llips_motiondetect.c.

CPU_CHAR search_diff	(	CPU_INT16U	tolerance,
		CPU_INT16U	quantity,
		t_img *	img_in1,
		t_img *	img_in2,
		t_img *	img_out,
		t_area *	change_img
	)

Search for difference between two images, using given tolerance and quantity change criteria.

Parameters

tolerance	CPU_INT16U - tolerance in % between two pixel
quantity	CPU_INT16U - quantity of pixel change to evaluate change
img_in1	t_img* - first image
img_in2	t_img* - second image
img_out	t_img* - img_in2 including area of change
change_img	t_area* - aera containing pixel that changed between img_in1 and img_in2

Returns

CPU_CHAR - status of operation

status of operation is combination of NO_DIFF no diff detected DIFF_SIZE size is different DIFF_BLUE difference on blue pixel DIFF_GREEN difference on blue pixel DIFF_RED difference on blue pixel DIFF_HIGH_QUANTITY globally high quantity of change

Definition at line 42 of file llips_motiondetect.c.

CPU_CHAR search_diff_x	(	CPU_INT16U	tolerance,
		CPU_INT16U	quantity,
		t_img *	img_in1,
		t_img *	img_in2,
		t_img *	img_out,
		t_area *	change_img
	)

Search for difference between two images, using given tolerance and quantity change criteria, but trying to find an horizontal move.

Warning

NOT FUNCTIONNAL

Parameters

tolerance	CPU_INT16U - tolerance in % between two pixel
quantity	CPU_INT16U - quantity of pixel change to evaluate change
img_in1	t_img* - first image
img_in2	t_img* - second image
img_out	t_img* - img_in2 including area of change
change_img	t_area* - aera containing pixel that changed between img_in1 and img_in2

Returns

CPU_CHAR - status of operation

Definition at line 211 of file llips_motiondetect.c.