IMAGE PROCESSING PROGRAM, IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND IMAGE PROCESSING SYSTEM

• US 20110169853A1
• Filed: 06/16/2010
• Published: 07/14/2011
• Est. Priority Date: 01/13/2010
• Status: Active Grant

• Current Assignee: Nintendo Company Limited
• Original Assignee: Nintendo Company Limited
• Inventors: Oiwa, Ryota, Okumura, Atsushi
• Granted Patent: US 8,391,631 B2
• Time in Patent Office: Days
• US Class Current: 345/589
• CPC Class Codes: G06T 11/203 Drawing of straight lines or curves

Abstract

A CPU of an image processing apparatus detects an outline from an original image, selects from the positions in association with the detected outline a position to be drawn at a ratio in correspondence with a predetermined ratio, for example, the number of positions, and draws an object at the selected position.

Claims

1. A storage medium storing an image processing program, wherein

said image processing program causes a computer of an image processing apparatus to execute:

an outline detector for detecting an outline from an image;

a position-to-be-drawn selector which selects a position to be drawn from positions in relation to the outline detected by said outline detector; and

a drawer which performs a predetermined drawing at the position selected by said position-to-be-drawn selector.

2. A storage medium storing an image processing program according to claim 1, wherein

said position-to-be-drawn selector selects the position to be drawn from said positions in relation to the outline according to a predetermined ratio.

3. A storage medium storing an image processing program according to claim 2, wherein

said position-to-be-drawn selector

counts said positions in relation to the outline,

sets the ratio in correspondence with the number of positions in relation to the outline, and

selects the position to be drawn from said positions in relation to the outline according to said ratio.

4. A storage medium storing an image processing program according to claim 3, wherein

said position-to-be-drawn selector sets a small ratio as said number of positions in relation to the outline is many.

5. A storage medium storing an image processing program according to claim 1, wherein

said position-to-be-drawn selector

calculates a distance from a predetermined position of said image to each of said positions in relation to the outline,

sets a ratio at which the position to be drawn is selected in correspondence with said distance, and

selects the position to be drawn according to the ratio from said positions in relation to the outline.

6. A storage medium storing an image processing program according to claim 5, wherein

said position-to-be-drawn selector

calculates a distance from a center of said image to each of said positions in relation to the outline, and

sets a great ratio as said distance is large.

7. A storage medium storing an image processing program according to claim 1, wherein

said position-to-be-drawn selector randomly selects the position to be drawn from said positions in relation to the outline.

8. A storage medium storing an image processing program according to claim 1, wherein

said outline detector

calculates, as to each pixel making up of said image, for each color component, a difference value between a first summed value obtained by summing color component values of said pixel, or said pixel and one or more adjacent pixels, and a second summed value obtained by summing color component values of the adjacent pixels not including said pixel which is the same number of pixels as that used for calculating the first summed value, and calculates a summed difference value by adding these difference values calculated, for each color component as to said pixel,

determines whether or not said summed difference value in each pixel of said image is equal to or more than a first threshold value, and

detects the pixel which is determined to be equal to or more than the first threshold value as a pixel making up of the outline.

9. A storage medium storing an image processing program according to claim 1, wherein

said image is divided into a plurality of sections each being made up of two or more pixels, and

said outline detector

calculates, as to each pixel making up of said image, for each color component, a difference value between a first summed value obtained by summing color component values of said pixel, or said pixel and one or more adjacent pixels, and a second summed value obtained by summing color component values of the adjacent pixels not including said pixel which is the same number of pixels as that used for calculating the first summed value, and calculates a summed difference value by adding these difference values calculated, for each color component as to said pixel,

determines whether or not said summed difference value of the pixel making up of each section is equal to or more than a first threshold value,

accumulates the summed difference values of the respective pixels which are determined to be equal to or more than the first threshold value for each section to evaluate an accumulated difference value,

determines whether or not the accumulated difference value of each section is equal to or more than a second threshold value and

detects the section which is determined to be equal to or more than said second threshold value as a section in relation to the outline, wherein

said position-to-be-drawn selector selects a section to be drawn from the sections in relation to said outline.

10. A storage medium storing an image processing program according to claim 2, wherein

said position-to-be-drawn selector

counts said positions in relation to the outline,

sets a probability in correspondence with the number of positions in relation to the outline, and

decides whether or not each of said positions in relation to the outline is an object to be drawn on the basis of said probability.

11. A storage medium storing an image processing program according to claim 10, wherein

said position-to-be-drawn selector

calculates a distance from a predetermined position of said image to each of said positions in relation to the outline,

corrects said probability in correspondence with said distance, and

performs said decision on the basis of said corrected probability.

12. A storage medium storing an image processing program according to claim 1, wherein

said image processing apparatus further comprises an imager, and

said image processing program causes said computer to further function as an image reader which reads an image imaged by said imager, wherein

said outline detector detects the outline from the image imaged by said image reader.

13. An image processing method, comprising:

an outline detecting step for detecting an outline from an image;

a position-to-be-drawn selecting step which selects a position to be drawn from positions in relation to the outline detected by said outline detecting step; and

a drawing step which performs a predetermined drawing at the position selected by said position-to-be-drawn selecting step.

14. An image processing system, comprising:

an outline detector for detecting an outline from an image;

a position-to-be-drawn selector which selects a position to be drawn from positions in relation to the outline detected by said outline detector; and

a drawer which performs a predetermined drawing at the position selected by said position-to-be-drawn selector.