Routines for image filtering. More...

Collaboration diagram for Image Filters:

Files
file	filters.h

Enumerations
enum	ICV_FILTER { ICV_FILTER_LOW_PASS , ICV_FILTER_LAPLACIAN , ICV_FILTER_HORIZONTAL_GRAD , ICV_FILTER_VERTICAL_GRAD , ICV_FILTER_HIGH_PASS , ICV_FILTER_NULL , ICV_FILTER_BOXCAR_AVERAGE }

enum	ICV_FILTER3 { ICV_FILTER3_LOW_PASS , ICV_FILTER3_HIGH_PASS , ICV_FILTER3_BOXCAR_AVERAGE , ICV_FILTER3_ANIMATION_SMEAR , ICV_FILTER3_NULL }

Functions
int	icv_filter (icv_image_t *img, ICV_FILTER filter_type)

icv_image_t *	icv_filter3 (icv_image_t old_img, icv_image_t curr_img, icv_image_t *new_img, ICV_FILTER3 filter_type)

int	icv_fade (icv_image_t *img, double fraction)
	Fades an image in place. More...

Detailed Description

Routines for image filtering.

This is done mainly using the convolution of images. Both Gray Scale and RGB images are taken care of.

Enumeration Type Documentation

◆ ICV_FILTER

enum ICV_FILTER

Enumerator
ICV_FILTER_LOW_PASS
ICV_FILTER_LAPLACIAN
ICV_FILTER_HORIZONTAL_GRAD
ICV_FILTER_VERTICAL_GRAD
ICV_FILTER_HIGH_PASS
ICV_FILTER_NULL
ICV_FILTER_BOXCAR_AVERAGE

Definition at line 41 of file filters.h.

◆ ICV_FILTER3

enum ICV_FILTER3

Enumerator
ICV_FILTER3_LOW_PASS
ICV_FILTER3_HIGH_PASS
ICV_FILTER3_BOXCAR_AVERAGE
ICV_FILTER3_ANIMATION_SMEAR
ICV_FILTER3_NULL

Definition at line 51 of file filters.h.

Function Documentation

◆ icv_filter()

int icv_filter	(	icv_image_t *	img,
		ICV_FILTER	filter_type
	)

Filters an image with the specified filter type. Basically convolves kernel with the image. Does zero_padding for outbound pixels.

Parameters

img	Image to be filtered.
filter_type	Type of filter to be used.

◆ icv_filter3()

icv_image_t* icv_filter3	(	icv_image_t *	old_img,
		icv_image_t *	curr_img,
		icv_image_t *	new_img,
		ICV_FILTER3	filter_type
	)

Filters a set of three image with the specified filter type. Does zero_padding for outbound pixels. Finds the resultant pixel with the help of neighboring pixels in all the three images.

Returns: Resultant image.

◆ icv_fade()

int icv_fade	(	icv_image_t *	img,
		double	fraction
	)

Fades an image in place.

icv_fade will darken a pix by a certain fraction.