摘要
介绍了数码相机的工作原理 ,分析了数码相机的系统结构 ,提出了设计数码相机的处理流程。典型的数码相机系统有镜头、闪光灯、光学取景器、LCD显示屏、图像数据存储扩展设备接口、图像数据传输接口、供电系统以及核心处理器等八个主要模块。数码相机的数据流向从图像传感器开始 ,止于图像数据的存储和传输。数据流的处理主要包括模数转换、光学黑电平钳位、针对镜头的边缘畸变的运算修正、坏像素处理、白平衡处理、伽马校正、色彩合成处理、边缘检测 (锐度检测 )和伪彩色检测 (伪彩色抑制 )。
The elements, system and data flow of Digital Still Camera (DSC) are described and analyzed. Typical DSC system has the modules of lens, flash lamp, viewfinder, LCD screen, UIO expansion controller for image storage, UIO expansion controller for data exchange, power supply, microprocessor and others. DSC's data flow starts from the image sensor and stops at the image data storage. DSC data processing module includes analog-digital converter, optical black level clamp, lens distortion compensation, dead pixel correction, white balance management, gamma correction, color composing, edge detection and false color suppression, JPEG compression, image data storage and others.
出处
《光学技术》
CAS
CSCD
2002年第5期452-454,458,共4页
Optical Technique
关键词
数码相机
图像处理
微处理器
工作原理
系统结构
DSC
digital still camera
image processing
microprocessor
elements
system
