COUNTERMEASURES AGAINST ORIGINAL BACKGROUND RETRIEVAL

摘要

A device and method of modifying an image containing a foreground and an original or substitute background are disclosed. Boundary pixels contain only the original background or the original background and the foreground. The original background is replaced by a predetermined or random color or by a color corresponding to the substitute background. The entire boundary pixel can be replaced by the replacement color. Alternatively, the ratio of the foreground to the original background can be estimated from the neighboring pixels and only the original background replaced by the replacement color. Once some or all of the boundary pixels are replaced, the image can be transmitted or otherwise transferred to other devices or viewers. Some or all of the images in a video can be modified.