DDR-based 4K image rotation method on SOC platform

• Main Authors: WU ZHENWU, JIANG TONGYUAN, JIANG YUANSONG, ZHU SHILUN
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses a DDR-based 4K image rotation method on an SOC platform. The DDR-based 4K image rotation method mainly comprises the following steps: S1, constructing a DDR image cache; s2, carrying out image block division and block RAM (Random Access Memory) cache division; s3, caching the image and carrying out image rotation processing; and S4, outputting the image after image rotation. According to the method disclosed by the invention, the quick rotation of the 4K image is realized by virtue of the characteristics of block RAM (Random Access Memory) random addressing and FPGA (Field Programmable Gate Array) high-efficiency algorithm implementation of an SOC (System On Chip) platform in combination with a large storage space and a burst transmission mechanism of DDR (Double Data Rate). 本发明公开了一种SOC平台上的基于DDR的4K像旋方法，其主要包括以下步骤：S1、构建DDR图像缓存；S2、图像块划分与block_RAM缓存划分；S3、缓存图像与像旋处理；S4、像旋后图像输出。本发明的方法借助SOC平台自带的block RAM随机寻址及FPGA高效算法实现的特点，结合DDR的大存储空间及突发传输机制，实现4K图像的快速旋转。