Patent ID: 8233192
Filing Date: 2012-07-31
Classification: H04N

Abstract:
1. An image, comprising: at least one light source; a light source control portion that controls a light source driving portion, the light source driving portion including a dummy circuit for adjusting an amount of current supplied to the light source; an image reading portion that reads image data from an image sensor captured while the light source control portion switches current to the light source according to a first timing and switches current to the dummy circuit according to a second timing; a black reference data reading portion that reads black reference data from the image sensor captured while the light source control portion switches current to the dummy circuit according to a third timing without switching current to the light source, the third timing corresponding to a timing at which noise is generated when the image data is captured; and a shading correction portion that performs shading correction of the image data using the black reference data, wherein the black reference data includes noise generated by switching current to the dummy circuit according to the third timing, which is equivalent to a noise added to the image data, and the shading correction portion removes the noise added to the image data by performing the shading correction.