초록 ▼

A single sensor video camera includes an optical blurring filter having a known spatial (or frequency) function and a color filter interposed between the blurring filter and an image sensor. The color filter has red and blue filter elements intermingled among a majority of green elements. An accurat

A single sensor video camera includes an optical blurring filter having a known spatial (or frequency) function and a color filter interposed between the blurring filter and an image sensor. The color filter has red and blue filter elements intermingled among a majority of green elements. An accurate estimate of the blurred green light blocked by the non-green elements is recovered by applying the image signal from the sensor to a digital filter and substituting the resultant signal for the missing green portions. The coefficients of the filter are selected in an optimization process that seeks to match the known function of the blurring filter to a like function of the digital filter (as represented by the coefficients). To do this the color filter must be configured to provide at least two green samples on either side of a non-green element.

대표청구항 ▼

Video apparatus for converting light from an image into an electrical signal and for processing the electrical signal, comprising: sensing means for generating the electrical signal from a blurred likeness of the image light; color filter means for partially blocking light of a particular color from

Video apparatus for converting light from an image into an electrical signal and for processing the electrical signal, comprising: sensing means for generating the electrical signal from a blurred likeness of the image light; color filter means for partially blocking light of a particular color from activating said sensing means; and electrical filter means for processing the electrical signal according to a set of weighting coefficients that are selected so as to generate a filtered signal representative of the brightness distribution of said light of said particular color that is blocked by said color filter means.