关键词: 视频图像压缩, 运动补偿, 运动估计, DCT变换

Abstract:

Video capture has become an important part in a monitoring system in the Internet of things. But video images require substantial storage space and communication bandwidth, which may cause great difficulties in transmission and storage, thus the need for video image compression. This paper discusses a video image compression method for a monitoring system in the Internet of Things, which combines the frame prediction, DCT transformation and variable length encoding to realize video encoding and decoding accordingly. Experimental results show that this method can effectively compress the video image and improve the transmission rate of the video images while reducing the transmission time.

Key words: video image compression, motion compensation, motion estimation, DCT transformation