Image compression for digital reality

A method of displaying images forming part of a digital reality stream, the method including, for each image to be displayed:

• a) in one or more encoder processing devices, generating compressed image data by differentially compressing image data indicative of the image in accordance with system operation and the content of the digital reality stream so that different parts of the image are compressed using a different degree of compression by:
• i) generating a boundary;
• ii) differentially compressing the image data in accordance with the boundary by selecting a respective compression scheme to compress image data within the boundary;
• and,
• iii) generating boundary data indicative of the boundary and in accordance with the selected compression scheme;
• b) wirelessly transmitting the compressed image data and the boundary data to a display device using a wireless communications link;
• and,
• c) in one or more decoder processing devices associated with the display device, differentially decompressing the compressed image data in accordance with the boundary data to thereby generate image data indicative of the image to be displayed by:
• i) determining the selected compression scheme in accordance with the boundary data;
• and,
• ii) using a corresponding decompression scheme to decompress the compressed image data.