Image processing apparatuses and non-transitory computer readable medium

• US 10,643,097 B2
• Filed: 08/29/2017
• Issued: 05/05/2020
• Est. Priority Date: 02/08/2017
• Status: Active Grant

• Current Assignee: Fujifilm Business Innovation Corp. (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Xerox Company Limited (Fujifilm Holdings Corporation)
• Inventors: Kobayashi, Kunihiko, Oya, Kazuhiro, Okada, Shigeru, Adachi, Shintaro, Kishimoto, Hiroyuki, Abe, Akane
• Primary Examiner(s): Park, Soo Jin
• Application Number:
  US15/689,365
• Publication Number:
  US 20180225541A1
• Time in Patent Office: 980 Days
• Field of Search: None
• CPC Class Codes: G06V 10/243 by compensating for image skew or non-uniform image deformations
• CPC Class Codes: G06V 30/40 Document-oriented image-based pattern recognition
• CPC Class Codes: H04N 1/3873 defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming
• CPC Class Codes: H04N 1/3875 combined with enlarging or reducing enlarging or reducing per se H04N1/393
• CPC Class Codes: H04N 1/3876 Recombination of partial images to recreate the original image
• CPC Class Codes: H04N 1/393 Enlarging or reducing

Abstract

An image processing apparatus includes a generation unit that generates, in a case where a small-sheet image in a first image is unsuccessfully extracted and results in multiple small-sheet images, a second image including the small-sheet images that are combined.

Claims

1. An image processing apparatus comprising:

a processor programmed to;

set a circumscribed area that includes a small-sheet image in a first image;

detect an edge pixel of the small-sheet image;

determine an effective edge of the small-sheet image based on a spatial relationship between (i) the circumscribed area set by the processor and (ii) the detected edge pixel of the small-sheet image, the spatial relationship including at least one of;

(i) a distance between the detected edge pixel and a side of the circumscribed area; and

(ii) a positional difference between the detected edge pixel and an adjacent edge pixel;

determine that the small-sheet image in the first image is unsuccessfully extracted based on the determined effective edge; and

in response to determining that the small-sheet image in the first image is unsuccessfully extracted, generate a second image by combining the small-sheet image with another small-sheet image that is also determined to be unsuccessfully extracted.

2. The image processing apparatus according to claim 1, wherein the processor is programmed to:

combine the small-sheet image with the other small-sheet image, if a distance between the small-sheet images is shorter than or not longer than a threshold.

3. The image processing apparatus according to claim 2,

wherein the threshold is one of a predetermined value, a value set in accordance with a small sheet type, and a value set in accordance with a size of a successfully extracted small-sheet image.

4. The image processing apparatus according to claim 1,

wherein in a case where the circumscribed area, which is a circumscribed rectangle, in the first image does not indicate a small-sheet image, the case is regarded as the case where the small-sheet image in the first image is unsuccessfully extracted.

5. The image processing apparatus according to claim 4, wherein the processor is programmed to:

perform a determination of whether the circumscribed rectangle indicates a small-sheet image in accordance with a size of the circumscribed rectangle or a number of detected sides of the small-sheet image in the circumscribed rectangle; and

use a result of the determination to generate the second image.

6. The image processing apparatus according to claim 5, wherein the processor is programmed to:

when the size of the circumscribed rectangle is within a predetermined range, or when the number of detected sides of the small-sheet image in the circumscribed rectangle is larger than or not smaller than a predetermined number, determine that the circumscribed rectangle indicates the small-sheet image.

7. A non-transitory computer readable medium storing a computer to execute a process for image processing, the process comprising:

setting a circumscribed area that includes a small-sheet image in a first image;

detecting an edge pixel of the small-sheet image;

determining an effective edge of the small-sheet image based on a spatial relationship between (i) the circumscribed area set by the processor and (ii) the detected edge pixel of the small-sheet image, the spatial relationship including at least one of;

(i) a distance between the detected edge pixel and a side of the circumscribed area; and

(ii) a positional difference between the detected edge pixel and an adjacent edge pixel;

determining that the small-sheet image in the first image is unsuccessfully extracted based on the determined effective edge; and

in response to determining that the small-sheet image in the first image is unsuccessfully extracted, generating a second image by combining the small-sheet image with another small-sheet image that is also determined to be unsuccessfully extracted.