Image Interpolation Device and Display Device

• US 20070297692A1
• Filed: 10/19/2005
• Published: 12/27/2007
• Est. Priority Date: 10/29/2004
• Status: Abandoned Application

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Hamatani, Kiyoshi, Uehara, Satoru, Ogasawara, Hisaya
• Application Number:
  US11/666,506
• Publication Number:
  US 20070297692A1
• Time in Patent Office: Days
• US Class Current: 382/282
• 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: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2340/0421 Horizontal resolution change
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: H04N 1/3935 with modification of image resolution, i.e. determining the values of picture elements at new relative positions

Abstract

An image interpolation device (310) includes a feature quantity calculating unit (313), an image interpolation processing unit (314), a resolution conversion processing unit (315) and a display control processing unit (316). With regards to pixels positioned in an interpolation subject area and peripheral pixels of the pixels, the feature quantity calculating unit (313) calculates feature quantities of the pixels. The image interpolation processing unit (314) extracts a pixel with the largest feature quantity from among the pixels positioned in the interpolation subject area. When the feature quantity of the extracted pixel is equal to a threshold or more, the image interpolation processing unit (314) sets a pixel value of the pixel as a pixel value of interpolation pixels. The resolution conversion processing unit (315) performs a resolution conversion on image data of which the interpolation pixels have been interpolated by the image interpolation processing unit (314). The display control processing unit (316) performs control to realign a plurality of pieces of image data including at least one piece of image data to which the resolution conversion has been performed by the resolution conversion processing unit (315) to a predetermined display configuration and display the realigned data.

Claims

1. An image interpolation device that performs an image interpolation process for determining pixel values of interpolation pixels to be interpolated in an interpolation subject area, based on pixels positioned in the interpolation subject area and peripheral pixels of the pixels, the image interpolation device comprising:

a feature quantity calculating unit that calculates feature quantities of the pixels based on the pixels positioned in the interpolation subject area and the peripheral pixels of the pixels; and

an image interpolation processing unit that performs the image interpolation process for determining the pixel values of the interpolation pixels based on calculated feature quantities.

2. The image interpolation device according to claim 1, wherein the image interpolation processing unit determines a pixel value of a pixel with a feature quantity that is equal to a threshold or more, among the pixels positioned in the interpolation subject area, to be a pixel value of the interpolation pixels.

3. The image interpolation device according to claim 1, wherein

the feature quantity calculating unit calculates a difference in pixel values of the pixels positioned in the interpolation subject area;

and

the image interpolation processing unit determines, when an absolute value of the difference is equal to a threshold or more, a pixel value that is an average of the pixel values of the pixels positioned in the interpolation subject area to be the pixel value of the interpolation pixels.

4. The image interpolation unit according to claim 1, wherein the image interpolation processing unit extracts a pixel having largest feature quantity from among the feature quantities of the pixels positioned in the interpolation subject area calculated by the feature quantity calculating unit, and, when the feature quantity of extracted pixel is equal to a threshold or more, determines the pixel value of the pixel to be the pixel value of the interpolation pixels.

5. The image interpolation device according to claim 4, wherein the image interpolation processing unit extracts a pixel having the largest feature quantity from among the feature quantities of the pixels positioned in the interpolation subject area, and, when the feature quantity of the extracted pixel is less than the threshold, determines a pixel value that is an average of the pixel values of the pixels positioned in the interpolation subject area to be the pixel value of the interpolation pixel.

6. The image interpolation device according to claim 1, further comprising a resolution conversion processing unit that performs a resolution conversion process on image data of which interpolation pixels have been interpolated by the image interpolation processing unit.

7. The image interpolation processing device according to claim 6, further comprising a display controlling unit that performs control to realign a plurality of pieces of image data including at least one piece of image data on which the resolution conversion process has been performed by the resolution conversion processing unit to a predetermined configuration and display the realigned image data.

8. A display device comprising:

a display unit that displays on a single screen an individual image corresponding to each of a plurality of viewing directions;

a feature quantity calculating unit that calculates feature quantities of pixels based on pixels positioned in an interpolation subject area of the images and peripheral pixels of the pixels;

an image interpolation processing unit that decides pixel values of interpolation pixels based on calculated feature quantities; and

a display controlling unit that creates image data of the interpolation pixels using the pixel values of the interpolation pixels determined by the image interpolation processing unit and displays the image data on the display unit.