Patent ID: 7834917

Claim:
An imaging apparatus having an imaging section and a noise reduction device which performs noise reduction for an image signal obtained from the imaging section, the noise reduction device comprising: extracting means for extracting an attention pixel used for the noise reduction and a plurality of adjacent pixels of the same color component as the attention pixel; edge detecting means for detecting whether there is an edge between the attention pixel and the plurality of adjacent pixels; determining means for determining that the adjacent pixels be able to be used for the noise reduction when the edge detecting means has not detected an edge and determining that the adjacent pixels be not able to be used for the noise reduction when the edge detecting means has detected an edge; first processing means for performing a first noise reduction process for a pixel value of the attention pixel and pixel values of the adjacent pixels determined to be able to be used for the noise reduction by the determining means; second processing means for performing a second noise reduction process for the pixel value of the attention pixel and the pixel values of the adjacent pixels determined to be able to be used for the noise reduction by the determining means while frequency characteristics are kept; and weighted adding means for adding an output value of the first processing means to which a first weighted coefficient is applied and an output value of the second processing means to which a second weighted coefficient determined using the first weighted coefficient is applied.