hi_ldc_v2_attr

Function

Defines the LDC attributes of the HI_LDC_V2 version.

Definition

typedef struct {
    hi_s32 focal_len_x;
    hi_s32 focal_len_y;
    hi_s32 coor_shift_x;
    hi_s32 coor_shift_y;
    hi_s32 src_cali_ratio[HI_SRC_LENS_COEF_SEG][HI_SRC_LENS_COEF_NUM];
    hi_s32 src_jun_pt;
    hi_s32 dst_cali_ratio[HI_DST_LENS_COEF_SEG][HI_DST_LENS_COEF_NUM];
    hi_s32 dst_jun_pt[HI_DST_LENS_COEF_SEG_POINT];
    hi_s32 max_du;
} hi_ldc_v2_attr;

For details about basic data type hi_s32, see Basic Data Types.

Members

Member	Description
focal_len_x	Valid focal length of the lens in the horizontal direction. Value range: [6400, 117341700]
focal_len_y	Valid focal length of the lens in the vertical direction. Value range: [6400, 117341700]
coor_shift_x	X coordinate of the optical center. Value range: [35 × width, 65 × width]. width indicates the image width.
coor_shift_y	Y coordinate of the optical center. Value range: [35 × height, 65 × height]. height indicates the image height.
src_cali_ratio	Lens distortion coefficient. A maximum of two segments are allowed. The value of [0][0] is fixed at 1 × 10⁵, and the value range of other members is [–16 × 10⁵, 16 × 10⁵].
src_jun_pt	Lens distortion coefficient. Value range: [0, 32 × 10⁵]
dst_cali_ratio	Lens distortion coefficient. A maximum of three segments are allowed. The value range of each member is [–16 × 10⁵, 16 × 10⁵].
dst_jun_pt	Lens distortion coefficient. Value range: [0, 16 × 10⁵]
max_du	LDC coefficient. Value range: [0, 1<<20]

Parent topic: Video Input (VI)