Patent ID: 7938546
Filing Date: 2011-05-10
Classification: H04N

Abstract:
1. Method of displaying a set of at least one image by illuminating an imager with a beam provided by light-emitting diodes of different colours wherein said method comprises: a step for receiving each image of said set encoded according to at least three primary colours of a colour base, called a primary colour base, said primary colours being represented as the corners of a primary polygon covering a gamut of colours that can be obtained; a step for determining a colour base dependent on the at least one image of said set, called a secondary colour base, including at least three secondary colours being represented as the corners of a secondary polygon covering a colour gamut comprising each of the pixels of the at least one image of said set or covering a predetermined percentage of pixels of the at least one image of said set, wherein each of said secondary colours is a primary colour or a mixture of primary colours, wherein the secondary polygon is included in the primary polygon, and wherein said step for determining the secondary colour base comprises selecting said secondary polygon that has a maximum compactness, the compactness being calculated by obtaining the ratio between the area of the secondary polygon and its perimeter squared; a step for dynamically controlling said diodes according to said secondary colour base; a step for converting the at least one image of said set from said primary colour base to said secondary colour base, by encoding each of the pixels of the at least one image of said set according to the secondary colours of said secondary colour base; a step of controlling the imager with the at least one converted image of said set.