Abstract
Modern photographic picture is modern science and technology, it makes a great contribution to the world ,it is widely welcomed. Technically, modern color photograph, based on color photographic film, and the technology of color film by layers of photographic organic dyes, layer materials preparation and flush, processing is inseparable from the chemical, so the color photography is chemistry. However, because now comparatively perfect automatic camera and color washing amplification equipment and excellent chemical chemicals, take now color photograph has very simple, almost no unsolved problems, the result is satisfactory. However, due to the chemical dyestuff inevitably natural color fade film is not exceptional also, records of color image, will often cannot wear preservation of natural fade.In this paper,I introduced an experiment of decoding encodede film through optical 4f system,but also presented a digital decoding method with Matlab,make the encoded film can be decoded by personal computer.By using the image tools of Matlab,there are five steps to realize decoding;image preprocessing, fourier transformation,color filting,inverse fourier transformation, image synthesis.In order to compelete digital decoding.
Key word;Matlab coded image optical decode digital decode (inverse)Forier transformation
