Feature Detection

Functions
uint16_t	arm_cv_get_scratch_size_canny_sobel (int width)
	Return the scratch size for canny_sobel function.
void	arm_cv_canny_edge_sobel (const arm_cv_image_gray8_t *imageIn, arm_cv_image_gray8_t *imageOut, q15_t *scratch, uint8_t lowThreshold, uint8_t highThreshold)
	Canny edge with sobel integrated.

Description

Function Documentation

arm_cv_canny_edge_sobel()

void arm_cv_canny_edge_sobel	(	const arm_cv_image_gray8_t *	imageIn,
		arm_cv_image_gray8_t *	imageOut,
		q15_t *	scratch,
		uint8_t	lowThreshold,
		uint8_t	highThreshold
	)

Canny edge with sobel integrated.

Parameters

[in]	imageIn	The input image
[out]	imageOut	The output image
[in,out]	scratch	Temporary buffer
[in]	lowThreshold	The low threshold
[in]	highThreshold	The high threshold

Temporary buffer sizing:

Will use a temporary buffer to store intermediate values of gradient and magnitude.

Size of temporary buffer is given by arm_cv_get_scratch_size_canny_sobel(int width)

arm_cv_get_scratch_size_canny_sobel()

uint16_t arm_cv_get_scratch_size_canny_sobel

(

int

width

)

Return the scratch size for canny_sobel function.

Parameters

[in]

width

The width of the image

Returns

Scratch size in bytes