Analysis of lossless radarimages compressionfor navigationin marine trafficand remote transmission

TLDR: To decrease size of data under transmission a new algorithm, namely RLE-BER (Run Length Encoding with Binary Encoded Runs) for radar images compression is proposed, and initial results are very promising, as the average compression ratio is near to 5: 1 when considering monochromepalette (binary image).

Abstract: One of the most important issue in maritime international transport is the necessity of increasing the level ofsafe in vessel's navigation. We can achieve this goal using various methods. One ofthem is the enlargementand enrichment of navigational data processed by own deck computer net and external systems AIS (Automatic Identification System) and VTS (Vessel Traffic Service). The radar image contains ex­ tensive and useful navigational information. That is why the incorporation of it into remote transmission is proposed here. In order to successfully realize this process the en­ hancement of the NMEA (National Marine Electronics As­ sociation) code is proposed through incorporation ofradar images into particular protocols. To decrease size of data under transmission a new algorithm, namely RLE-BER (Run Length Encoding with Binary Encoded Runs) for radar images compression is proposed Some experimental results are presented on real data. The detail description of the method is also provided The initial results are very promising, as the average compression ratio is near to 5: 1 when considering monochromepalette (binary image). The proposedmethod is lossless, because we assumed the maxi­ mum safety level ofthe final system.