Data correction method, apparatus and program

• US 20080025562A1
• Filed: 07/25/2007
• Published: 01/31/2008
• Est. Priority Date: 07/27/2006
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Takemoto, Fumito
• Granted Patent: US 8,107,757 B2
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G06T 2207/10024 Color image
• CPC Class Codes: G06T 5/009 Global, i.e. based on properties of the image as a whole applied in cameras using an electronic image sensor H04N23/80, H04N23/70
• CPC Class Codes: G06T 5/40 using histogram techniques
• CPC Class Codes: G06T 5/92 based on global image properties

Abstract

Natural images which are similar to each other contained in a page represented by page description data are corrected so that they have natural appearance to the eye. To achieve this object, an image recognizing unit recognizes images in a page represented by page description data, and a natural image determining unit determines whether or not each recognized image is a natural image. An image analyzing unit calculates a setup condition for image correction for each natural image. A second correction condition calculating unit calculates, for the similar natural images being similar to each other, a correction condition for making image qualities of the similar natural images substantially uniform. An image correcting unit applies image correction based on the setup condition and the correction condition to the similar natural images.

Claims

1. A data correction apparatus comprising:

image recognizing means for recognizing images in a page represented by page description data, the page description data describing the page containing at least the images among the images and texts;

natural image determining means for determining whether or not each image recognized by the image recognizing means is a natural image;

similarity determining means for determining similar natural images being similar to each other among the natural images determined by the natural image determining means when more than one natural images are contained in the page;

image analyzing means for calculating a setup condition for image correction for each natural image;

correction condition calculating means for calculating, for all the similar natural images, a correction condition for making image qualities of the similar natural images substantially uniform; and

image correcting means for applying image correction based on the setup condition and the correction condition to the similar natural images.

2. The data correction apparatus as claimed in claim 1, wherein the correction condition comprises a condition for making image features of the similar natural images substantially uniform, the image features influencing appearance of the similar natural images to the eye.

3. A data correction method comprising the steps of:

recognizing images in a page represented by page description data, the page description data describing the page containing at least the images among the images and texts;

determining whether or not each recognized image is a natural image;

determining similar natural images being similar to each other among the determined natural images when more than one natural images are contained in the page;

calculating a setup condition for image correction for each natural image;

calculating, for all the similar natural images, a correction condition for making image qualities of the similar natural images substantially uniform; and

applying image correction based on the setup condition and the correction condition to the similar natural images.

4. The data correction method as claimed in claim 3, wherein the correction condition comprises a condition for making image features of the similar natural images substantially uniform, the image features influencing appearance of the similar natural images to the eye.

5. A computer-readable recording medium storing a program for causing a computer to execute a data correction method comprising the procedures of:

recognizing images in a page represented by page description data, the page description data describing the page containing at least the images among the images and texts;

determining whether or not each recognized image is a natural image;

determining similar natural images being similar to each other among the determined natural images when more than one natural images are contained in the page;

calculating a setup condition for image correction for each natural image;

calculating, for all the similar natural images, a correction condition for making image qualities of the similar natural images substantially uniform; and

applying image correction based on the setup condition and the correction condition to the similar natural images.

6. The computer-readable recording medium as claimed in claim 5, wherein the correction condition comprises a condition for making image features of the similar natural images substantially uniform, the image features influencing appearance of the similar natural images to the eye.