Patent ID: 7613505

Claim:
A method for detecting and locating the difference in density and/or structure and/or chemical composition of a biological tissue which is subjected to continuous illumination in a first determined band of frequencies, able to cause the tissue to generate a phenomenon of fluorescence, autofluorescence or luminescence in a second band of frequencies, comprising: capturing an image of the biological tissue illuminated in this way, using colour video means provided with image sensors with a mosaic of pixels provided with filters of complementary colours, the filters having a greater range of reaction compared to filters of primary colours, for each point of the image so obtained: a) collecting data related to the energy received by each pixel, so as to reconstitute the image of the biological tissue, and b) amplifying, pixel by pixel, the signal corresponding to the energy received in the second band of frequencies so as to characterize the said difference of the biological tissue in the image obtained, by acting on signals as received by at least two neighbouring pixels provided with filters of different colours, an amount of amplification of the signal corresponding to the energy received in the second band of frequencies by said at least two neighbouring pixels.