Integral Images

Integral image calculations for binary and 8-bit images. More...

Functions
int	rapp_integral_sum_bin_u8 (uint8_t *restrict dst, int dst_dim, const uint8_t *restrict src, int src_dim, int width, int height)
	Integral image.
int	rapp_integral_sum_bin_u16 (uint16_t *restrict dst, int dst_dim, const uint8_t *restrict src, int src_dim, int width, int height)
	Integral image.
int	rapp_integral_sum_bin_u32 (uint32_t *restrict dst, int dst_dim, const uint8_t *restrict src, int src_dim, int width, int height)
	Integral image.
int	rapp_integral_sum_u8_u16 (uint16_t *restrict dst, int dst_dim, const uint8_t *restrict src, int src_dim, int width, int height)
	Integral image.
int	rapp_integral_sum_u8_u32 (uint32_t *restrict dst, int dst_dim, const uint8_t *restrict src, int src_dim, int width, int height)
	Integral image.

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Detailed Description

Integral image calculations for binary and 8-bit images.

The functions may read data up to the nearest alignment boundary, so if those pixels are not properly cleared the output may be invalid.

All images must be aligned.

Next section: License

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Function Documentation

int rapp_integral_sum_bin_u8	(	uint8_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	src,
		int	src_dim,
		int	width,
		int	height
	)

Integral image.

Compute the 8-bit integral image from a binary source.

Parameters:

[out]	dst	Integral image buffer.
	dst_dim	Row dimension of the integral image.
[in]	src	Source image buffer.
	src_dim	Row dimension of the source image.
	width	Image width in pixels.
	height	Image height in pixels.

Returns:

A negative error code on error, zero otherwise.

int rapp_integral_sum_bin_u16	(	uint16_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	src,
		int	src_dim,
		int	width,
		int	height
	)

Integral image.

Compute the 16-bit integral image from a binary source.

Parameters:

[out]	dst	Integral image buffer.
	dst_dim	Row dimension of the integral image.
[in]	src	Source image buffer.
	src_dim	Row dimension of the source image.
	width	Image width in pixels.
	height	Image height in pixels.

Returns:

A negative error code on error, zero otherwise.

int rapp_integral_sum_bin_u32	(	uint32_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	src,
		int	src_dim,
		int	width,
		int	height
	)

Integral image.

Compute the 32-bit integral image from a binary source.

Parameters:

[out]	dst	Integral image buffer.
	dst_dim	Row dimension of the integral image.
[in]	src	Source image buffer.
	src_dim	Row dimension of the source image.
	width	Image width in pixels.
	height	Image height in pixels.

Returns:

A negative error code on error, zero otherwise.

int rapp_integral_sum_u8_u16	(	uint16_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	src,
		int	src_dim,
		int	width,
		int	height
	)

Integral image.

Compute the 16-bit integral image from an 8-bit source.

Parameters:

[out]	dst	Integral image buffer.
	dst_dim	Row dimension of the integral image.
[in]	src	Source image buffer.
	src_dim	Row dimension of the source image.
	width	Image width in pixels.
	height	Image height in pixels.

Returns:

A negative error code on error, zero otherwise.

int rapp_integral_sum_u8_u32	(	uint32_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	src,
		int	src_dim,
		int	width,
		int	height
	)

Integral image.

Compute the 32-bit integral image from an 8-bit source.

Parameters:

[out]	dst	Integral image buffer.
	dst_dim	Row dimension of the integral image.
[in]	src	Source image buffer.
	src_dim	Row dimension of the source image.
	width	Image width in pixels.
	height	Image height in pixels.

Returns:

A negative error code on error, zero otherwise.