https://blog.youkuaiyun.com/dragon101788/article/details/78404669
Video graphics system[IPU, VPU and GPU]
IPU: Image Processing Unit
• – Display
• – Camera
• – Image Rotation, Inversion, Color Space Conversion
• – Image quality enhancement
• – Video/graphics combining
VPU: Video Processing Unit
• – Video encoding & decoding
• – Post-filtering
• – Rotation & inversion
GPU: Graphics Processing Units
• – 2D (OpenVG 1.1)
• – 3D (OpenGL ES 2.0)
IPU:跟Camera,Display相关
VPU:跟视频播放相关,主要包括HW codec和视频后处理等
VPU is a high performance multi-standard video codec IP that can perform the H.264 BP/MP/HP, VC-1 SP/MP/AP, MPEG-4 SP/ASP, Divx, MPEG-1/2, RV-8/9/10, and MJPEG decoding and encoding.
GPU:跟2D(OpenVG)和3D(OpenGL)相关

图一:The Multimedia Processing Chain - Implementation
本文深入解析多媒体处理链中三大核心组件的功能与应用:IPU(图像处理单元)负责图像质量增强与显示;VPU(视频处理单元)实现视频编解码及后处理;GPU(图形处理单元)支撑2D与3D图形渲染。全面覆盖从视频播放到图像处理的多媒体技术关键点。
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