Patent ID: 7697775

Claim:
An image signal processing apparatus for outputting an image signal obtained by processing an input image signal, comprising: designating means for designating a parameter representing a degree of image blurring; detecting means for detecting an image characteristic and outputting a characteristic code representing the detected characteristic; storage means for storing a coefficient corresponding to the parameter designated by said designating means and a coefficient corresponding to the characteristic code output by said detecting means; reading means for reading, from said storage means, the coefficient corresponding to the parameter designated by said designating means and the coefficient corresponding to the characteristic code output by said detecting means; calculating means for calculating new pixel levels for a plurality of pixel levels of the input image based on the coefficients read by said reading means; and selectively-outputting means for selectively outputting, to a display, one of the new pixel levels calculated by said calculating means and the pixel levels of the input image, according to a predetermined threshold and a calculated dispersion of the new pixel levels, the calculated dispersion indicating a degree of deterioration associated with the new pixel levels.