1. A camera signal processing apparatus comprising: an interpolated pixel data generating means for interpolating pixel data in at least two directions based on a position of said pixel data and/or pixel data around said position, said pixel data being generated based on an imaging signal coming from a solid-state image sensor in which an imaging light enters through a color filter having a different spectral characteristic for each pixel, thereby separately generating interpolated pixel data in said at least two directions; a correlation detecting means for detecting a correlation value indicative of a degree of correlation in each of said at least two directions of said interpolated pixel data generated by said interpolated pixel data generating means; a normalizing means for normalizing said correlation value detected by said correlation detecting means in each of said at least-two directions to generate a normalized value indicative of a relative value of said correlation value of each of said at least two directions; a correcting means for adding a predetermined correction value to said normalized value generated by said normalizing means; a weighting means for weighting said interpolated pixel data in each of said at least two directions generated by said interpolated pixel data generating means with said normalized value obtained by adding said correction value to said interpolated pixel data in each of said at least two directions and adding together the weighted interpolated pixel data in all of said at least two directions to generate interpolated pixel data; and an image generating means for generating an image based on said interpolated pixel data weighted by said weighting means.