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 structure for resetting and initialization. Do not explicitly access the reserved field in the code.

Parent topic: VPC Image Processing