vpc_crop_resize_resize_paste

Applicability

Product	Supported (√/x)
Atlas A3 training products/Atlas A3 inference products	x
Atlas A2 training products/Atlas A2 inference products	x
Atlas training products	x
Atlas inference products	√
Atlas 200I/500 A2 inference products	x

Function Usage

Crops an ROI from the input image, resizes the crop ROI twice (to blur and anonymize sensitive image information), and pastes the resized ROI in the specified area of the output image. This API is asynchronous.

Prototype

C Prototype

hi_s32 hi_mpi_vpc_crop_resize_resize_paste(hi_vpc_chn chn, const hi_vpc_pic_info *source_pic, hi_vpc_crop_resize_resize_paste_region crop_resize_resize_paste_info[], hi_u32 count, hi_u32 *task_id, hi_s32 milli_sec)

Python Function

task_id, ret = acl.himpi.vpc_crop_resize_resize_paste(chn, source_pic,crop_resize_resize_paste_info,count,milli_sec)

Parameter Description

Parameter	Description
chn	Int, channel ID for image processing.
source_pic	Dict, source image information dictionary. For details, see hi_vpc_pic_info. When the input image resolution is in the range of [10 x 6, 4096 x 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported.
crop_resize_resize_paste_info	List, image cropping, resizing, and pasting information list. The list length is the same as that of the count value. For details about the element type, see hi_vpc_crop_resize_resize_paste_region.
count	Int, number of crop, resize, and paste ROIs. Must be in the range of [1, 256]. When the input image resolution is in the range of [10 x 6, 4096 x 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported.
milli_sec	Int, timeout interval, in milliseconds. -1: blocking mode. 0: non-blocking mode. > 0: timeout interval (timeout mode). The timeout interval varies with the operating system. The deviation is generally within a time slice of an operating system. For example, if the time slice of an operating system is 4 ms and the value of milli_sec is set to 1, the actual timeout interval ranges from 1 ms to 5 ms. When the CPU load is high, the timeout interval may fluctuate.

Return Value Description

Return Value	Description
task_id	Int, task ID, used to identify a task.
ret	Int, error code. 0: success. Other values: failures. For details, see VPC Return Codes.

Restrictions

The number of output images is at least 1 and at most the number of crop ROIs. That is, if multiple ROIs are cropped from an input image, there can be one or more paste ROIs. This depends on the address specified in the hi_vpc_crop_resize_resize_paste_region dictionary.
When the input and output images are in ARGB8888, ABGR8888, RGBA8888, or BGRA8888 format, the A component value changes to 0 after being resized by this API.
For details about the restrictions on the VPC functions, see Restrictions.

Parent topic: VPC APIs