hi_filter_2d_config

Description

Defines the 2D convolutional filtering parameters.

Prototype

typedef struct {
    hi_double filter[5][5];
    hi_size kernel_size;
    hi_point anchor; 
    hi_double delta; 
    hi_vpc_bord_type border_type;
    hi_vpc_scalar scalar_value;
    hi_u32 reserved[2];
} hi_filter_2d_config;

Members

Member	Description
filter	User-defined convolution kernel. Since the filter is a 5 x 5 array, when the width and height within the kernel_size are not both 5, the intermediate data within the two-dimensional array is valid, for example: When the width is 1 and the height is 3, the data in the yellow zone in the following figure is valid. When the width is 3 and the height is 3, the data in the yellow zone in the following figure is valid.
kernel_size	Size of the convolution kernel. The width and height of kernel_size can only be set to 1, 3, or 5.
anchor	Convolution kernel anchor, which needs to be set to (–1, –1). This field is reserved.
delta	Incremental value, which is added to each pixel value after convolution.
border_type	Border making type. Only the HI_BORDER_CONSTANT and HI_BORDER_REPLICATE modes are supported.
scalar_value	Border making value.
reserved[2]	Reserved. To ensure compatibility in later versions, use the memset struct for resetting and initialization. Do not explicitly access the reserved field in the code.

Parent topic: VPC Image Processing