Signal processing device, method, and program

• US 20060098893A1
• Filed: 02/12/2004
• Published: 05/11/2006
• Est. Priority Date: 02/13/2003
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sawao, Takashi, Ishibashi, Junichi, Kondo, Tetsujiro, Nagano, Takahiro, Wada, Seiji, Miyake, Toru, Fujiwara, Naoki
• Granted Patent: US 7,668,393 B2
• Time in Patent Office: Days
• US Class Current: 382/266
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/20192 Edge enhancement; Edge preservation
• CPC Class Codes: G06T 3/4007 based on interpolation, e.g. bilinear interpolation image demosaicing G06T3/4015; edge-driven or edge-based scaling G06T3/403
• CPC Class Codes: G06T 7/12 Edge-based segmentation
• CPC Class Codes: G06V 10/443 by matching or filtering

Abstract

The present invention takes into consideration the real world where data was acquired, and enables obtaining of processing results which are more accurate and more precise as to phenomena in the real world. A data continuity detecting unit 101 detects the continuity of data of second signals, having second dimensions that are fewer than first dimensions had by first signals which are real world signals and are projected whereby a part of the continuity of the real world signals is lost, wherein the continuity to be detected corresponds to the continuity of the real world signals that has been lost. An actual world estimating unit 102 estimates a real world image by estimating the continuity of the real world image that has been lost, based on the continuity of the data detected by the data continuity detecting unit 101.

Claims

1. A signal processing device including:

data continuity detecting means for detecting the continuity of data of second signals, having second dimensions that are fewer than first dimensions had by first signals which are real world signals and are projected whereby a part of the continuity of said real world signals is lost, said continuity to be detected corresponding to the continuity of said real world signals that has been lost; and

actual world estimating means for estimating said first signals by estimating the continuity of said real world signals that has been lost, based on the continuity of said data detected by said data continuity detecting means.

2. A signal processing device according to claim 1, wherein said data continuity detecting means detect data continuity in image data made up of a plurality of pixels from which a part of the continuity has been lost of said real world light signals, which are said second signals, obtained by real world light signals which are said first signals being cast onto a plurality of detecting elements each having time-space integration effects;

and wherein said actual world estimating means generate a second function approximating a first function representing said real world light signals, based on said data continuity detected by said data continuity detecting means.

3. A signal processing device according to claim 2, wherein said actual world estimating means generate a second function approximating a first function representing said real world light signals, by approximating said image data assuming that the pixel values of said pixels corresponding to positions in at least one dimension direction of the time-spatial directions of said image data are pixel values acquired by integration effects in said at least one dimension direction, based on said data continuity detected by said data continuity detecting means.

4. A signal processing device according to claim 3, wherein said actual world estimating means generate a second function approximating a first function representing said real world light signals, by approximating said image data assuming that the pixel values of said pixels corresponding to positions in one dimension direction of the time-spatial directions of said image data are pixel values acquired by integration effects in said one dimension direction, corresponding to said data continuity detected by said data continuity detecting means.

5. A signal processing device according to claim 3, wherein said actual world estimating means generate a second function approximating a first function representing said real world light signals, by approximating said image data assuming that the pixel value of each pixel, corresponding to a predetermined distance along said at least one dimension direction from a reference point corresponding to said data continuity detected by said continuity detecting means, is a pixel value acquired by integration effects in said at least one dimension direction.

6. A signal processing device according to claim 3, further comprising pixel value generating means for generating pixel values corresponding to pixels of a desired magnitude, by integrating said second function generated by said actual world estimating means with a desired increment in said at least one dimension direction.

7. A signal processing device according to claim 6, wherein said pixel value generating means generate pixel values by integrating said second function with an increment corresponding to said each pixel in said at least one dimension direction;

and wherein said signal processing device further comprises output means for detecting a difference value between a pixel value generated by said pixel value generating means and pixel values of a plurality of pixels making up said image data, and selectively outputting said second function according to said difference value.

8. A signal processing device according to claim 3, wherein said actual world estimating means generate a second function approximating a first function representing said real world light signals, by approximating said image data with a polynomial assuming that the pixel values of said pixels corresponding to positions in at least two dimension directions of the time-spatial directions of said image data are pixel values acquired by integration effects in said at least two dimension directions, corresponding to said data continuity detected by said data continuity detecting means.

9. A signal processing device according to claim 3, wherein said actual world estimating means generate a second function approximating a first function representing said real world light signals, by approximating said image data with a polynomial assuming that the pixel value of a pixel, corresponding to a predetermined distance along said at least two dimension directions from a reference point corresponding to said data continuity detected by said continuity detecting means, is a pixel value acquired by integration effects in said at least two dimension directions.

10. A signal processing device according to claim 8, further comprising pixel value generating means for generating pixel values corresponding to pixels of a desired magnitude, by integrating said second function generated by said actual world estimating means with a desired increment in said at least two dimension directions.

11. A signal processing method including:

a data continuity detecting step for detecting the continuity of data of second signals, having second dimensions that are fewer than first dimensions had by first signals which are real world signals and are projected whereby a part of the continuity of said real world signals is lost, said continuity to be detected corresponding to the continuity of said real world signals that has been lost; and

an actual world estimating step for estimating said first signals by estimating the continuity of said real world signals that has been lost, based on the continuity of said data detected in said data continuity detecting step.

12. A program for causing a computer to execute:

a data continuity detecting step for detecting the continuity of data of second signals, having second dimensions that are fewer than first dimensions had by first signals which are real world signals and are projected whereby a part of the continuity of said real world signals is lost, said continuity to be detected corresponding to the continuity of said real world signals that has been lost; and

an actual world estimating step for estimating said first signals by estimating the continuity of said real world signals that has been lost, based on the continuity of said data detected in said data continuity detecting step.