视频传输算法在浮选泡沫图像分析系统中的应用

以图像处理技术为主要依托的浮选泡沫图像系统，通过对浮选流程中的浮选泡沫进行非接触式测量，将图像信息转化成连续的、实时的可分析测量数据，提高选矿流程的在线检测水平，为生产过程的智能化提升提供高精度的数据依托。随着浮选泡沫图像系统的不断提升改进，基于嵌入式系统的集成式测量为系统提供了有力的技术支持，打破了传统图像处理工作站模式，采用无线传输方式进行图像和数据的在线传输，但对于高帧视频的压缩和数据同步是嵌入式浮选泡沫图像系统需解决的最大难题。本文综合研究了图像压缩、视频传输算法，采用二维整数变换对浮选泡沫图像进行帧内压缩，再通过帧间差分算法对小片段视频流进行帧间编码，最后选用协议进行流传输，将接收到的数据和图像流在安装好的浏览器端进行显示。嵌入式浮选泡沫系统的研究将完全取代原有的图像处理工作站功能，大大减少设备故障发生率和成本，为浮选智能控制提供稳定、高效的数据支持。

Application of video transmission algorithm in forth flotation image analysis system

The forth flotation image analysis system, which mainly relies on image processing technology, converts the image information into continuous and real-time analyzable measurement data through non-contact measurement of flotation in the flotation process. It can improve the online detection level of the beneficiation process, and provide high-precision data support for the intelligent improvement of the production process. With the continuously improvement of the system, the integrated measurement based on the embedded system provides strong technical support for the system. It will break the traditional image processing workstation mode, and adopt the wireless transmission mode for the online transmission of images and data. However, the compression and data synchronization of high-frame-video is the biggest problem to be solved of the embedded forth flotation image analysis system. With the comprehensively study of image compression and video transmission algorithms, this paper use using two-dimensional integer DCT transform to compress the forth flotation image, and then the small video stream is encoded through the inter frame difference algorithm. Finally, RTP protocol is used for streaming transmission, and the received data and image stream are displayed on the installed browser. The research of embedded forth flotation system will completely replace the original image processing workstation function, also can greatly reduce the equipment failure rate and cost. It will provide stable and efficient data support for flotation intelligent control.