Solid-state imaging device, camera system, solid-state imaging device reading method and program

1. A solid-state imaging device comprising:

a pixel section formed by a plurality of pixels having a photoelectric conversion function arranged in the form of a matrix;

a pixel driving section driving the operation of the pixels to allow a readout to be performed according to a readout mode;

a readout circuit reading out signals from the pixels and outputting the signals as image data in a raw data format; and

a logic section performing scaling and phase correction in preparation for a resolution conversion process on a signal output from the readout circuit, wherein the logic section includes

a resize portion performing a scaling process on the signal output from the readout circuit according to a scaling factor N (N is a value greater than 0) and

a correction portion obtaining a distance Scaled_P between pixels of the same color which have been scaled from the scaling factor N, a readout factor B, and a distance P between adjoining pixels of different colors, obtaining the amount of correction to be made on a pixel to be corrected from the distance Scaled_P between pixels of the same color and the distance P between adjoining pixels of different colors, and performing phase correction according to the amount of correction.

2. A solid-state imaging device according to claim 1 , wherein the correction portion obtains the distance Scaled_P between the pixels of the same color which have been scaled according to an expression

Scaled — P=xBNP

where x represents a parameter determined by the arrangement of the pixels.

3. A solid-state imaging device according to claim 1 or 2 , wherein the correction portion obtains a distance D to a point of correction as the amount of correction to be made on the pixel to be corrected according to an expression

D =(Scaled — P/x )− P.

4. A solid-state imaging device according to claim 1 or 2 , wherein the readout factor B is a binning factor which represents the number of pixels to be subjected to thin-out or summation in the case of resolution conversion in the direction of scaling down and which is 1 in the case of resolution conversion in the direction of scaling up.

5. A camera system comprising:

a solid-state imaging device; and

an optical system forming an image of an object on the solid-state imaging device, wherein

the solid-state imaging device includes

a pixel section formed by a plurality of pixels having a photoelectric conversion function arranged in the form of a matrix,

a pixel driving section driving the operation of the pixels to allow a readout to be performed according to a readout mode,

a readout circuit reading out signals from the pixels and outputting the signals as image data in a raw data format, and

a logic section performing scaling and phase correction in preparation for a resolution conversion process on a signal output from the readout circuit, the logic section including

a resize portion performing a scaling process on the signal output from the readout circuit according to a scaling factor N (N is a value greater than 0) and

a correction portion obtaining a distance Scaled_P between pixels of the same color which have been scaled from the scaling factor N, a readout factor B, and a distance P between adjoining pixels of different colors, obtaining the amount of correction to be made on a pixel to be corrected from the distance Scaled_P between pixels of the same color and the distance P between adjoining pixels of different colors, and performing phase correction according to the amount of correction.

6. A method of reading data from a solid-state imaging device, comprising the steps of:

driving the operation of pixels of a pixel section formed by a plurality of pixels having a photoelectric conversion function arranged in the form of a matrix to allow a readout to be performed according to a readout mode;

reading out signals from the pixels and outputting the signals as image data in a raw data format; and

performing scaling and phase correction in preparation for a resolution conversion process on a signal output at the readout step, wherein the scaling and correction step includes the steps of

performing a scaling process on the signal output at the readout step according to a scaling factor N (N is a value greater than 0),

obtaining a distance Scaled_P between scaled pixels of the same color from the scaling factor N, a readout factor B, and a distance P between adjoining pixels of different colors,

obtaining the amount of correction to be made on a pixel to be corrected from the distance Scaled_P between pixels of the same color and the distance P between adjoining pixels of different colors, and

performing phase correction according to the amount of correction.

7. A non-transitory computer readable medium embodying a program causing a computer to execute processes for reading data from a solid-state imaging device, the processes including:

a pixel driving process for driving the operation of pixels of a pixel section formed by a plurality of pixels having a photoelectric conversion function arranged in the form of a matrix to allow a readout to be performed according to a readout mode;

a readout process for reading signals from the pixels and outputting the signals as image data in a raw data format; and

a scaling and correction process for performing scaling and phase correction in preparation for a resolution conversion process on a signal output at the readout process, wherein the scaling and correction process includes

a resize process for scaling the signal output at the readout process according to a scaling factor (N is a value greater than 0),

a process for obtaining a distance Scaled_P between scaled pixels of the same color from the scaling factor N, a readout factor B, and a distance P between adjoining pixels of different colors,

a process for obtaining the amount of correction to be made on a pixel to be corrected from the distance Scaled_P between pixels of the same color and the distance P between adjoining pixels of different colors, and

a correction process for performing phase correction according to the amount of correction.