Patent ID: 7746359

Claim:
A signal processing device comprising: a hardware sensor configured to detect a plurality of pixels; a movement vector setting unit configured to set movement vectors for an object within image data wherein a light signal of a real world is projected on the plurality of pixels, each having a time-space integration effect, and a portion of continuity of the light signal of the real world is lost; a model generator configured to generate a relation model modeling a relation between a pixel value of each pixel within said image data and a real world function approximated with a spline function, the pixel value of each pixel corresponding to a position in a predetermined one-dimensional direction of a spatial direction of image data is a pixel value acquired by the real world function corresponding to said real world light signals, the model generator configured to estimate the real world function by solving an equation representing that the pixel value is acquired by integrating a model as the moving spline function, which is moving in the time direction corresponding to said movement vector while phase-shifting, in said predetermined one-dimensional direction and the time direction; an equation generator configured to generate equations by substituting pixel values of each of the pixels within said image data as to the relation model generated by said model generator, as well as to generate equations which provide conditions which constrain change of the pixel values within the pixels displayed with the spline function approximating said real world function to be a small change; and a real world waveform estimating unit configured to estimate said real world function corresponding to said real world light signals by computing equations generated by said equation generator.