Method and device for image and video transmission over low-bandwidth and high-latency transmission channels

Abstract

The present invention provides a method for transmission of a images and/or video over bandwidth limited transmission channels having varying available bandwidth, which method comprises the use of a classification algorithm for decomposing the images and/or video to be transmitted into multiple spatial areas, each area having a specific image type; detecting the image type of each of those areas separately selecting for each of those areas an image and/or video encoding algorithm having a compression ratio. The classification algorithm prioritizes each of the areas, the classification algorithm increasing the compression ratio of the image and/or video encoding algorithm dedicated to spatial areas having lower priority in case of decreasing bandwidth.

Description

TECHNICAL FIELD OF THE INVENTION [0001] The present invention relates to systems and methods for transmission of high quality images and video over (wireless) bandwidth limited, lossy and high-latency transmission channels. With “high quality images and video” is typically meant “medical images and video”. More particularly, the invention relates to systems and methods for transmitting images and video over channels such as Wifi, UWB, Bluetooth, DECT, ZigBee, . . . and provides solutions for typical problems such as overall low image quality at higher compression ratio and high latency. BACKGROUND OF THE INVENTION [0002] This invention is in the field of methods and systems for transmitting images or video over channels where there is a bandwidth limitation present, where the channel possibly is lossy or where latency is important. The general problem to solve is the transport of high-quality images or video from one point to another. Because of the bandwidth limitations of the chan...

AI Technical Summary

Benefits of technology

[0032] According to the present invention, the classification algorithm is adapted to prioritize each of the areas, the classification algorithm increasing the compression ratio of the image and / or video encoding algorithm dedicated to spatial areas having lower priority in case of decreasing bandwidth.

Problems solved by technology

Such problems are e.g., but not limited thereto, low overall image / video quality when only a low bandwidth channel is available, severe image degradation due to introduction of bit errors on the channel and the problem of latency when communication is bidirectional.

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