IMAGE PROCESSING APPARATUS, CONTROL METHOD THEREOF AND STORAGE MEDIUM

• US 20200134402A1
• Filed: 10/10/2019
• Published: 04/30/2020
• Est. Priority Date: 10/24/2018
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yabe, Takashi
• Granted Patent: US 11,080,573 B2
• Time in Patent Office: Days
• CPC Class Codes: G06K 15/1809 relating to the printing process
• CPC Class Codes: G06K 15/1813 Page description language recognition
• CPC Class Codes: G06K 15/1843 Changing size or raster resolution
• CPC Class Codes: G06K 15/1874 with provisions for treating some of the print data differently
• CPC Class Codes: G06K 15/188 with provisions for treating some of the print data differently

Abstract

In processing to thicken a white thin line, the application range thereof is controlled to as to prevent a white thin line not intended by a user from being thickened. The thickening processing is performed for a line that has a density less than or equal to a predetermined density and includes a pixel having attribute information of a drawing object; and not performed for a line that has a density less than or equal to the predetermined density and includes a pixel not having attribute information of the drawing object.

Claims

1. An information processing apparatus comprising:

at least one controller, having at least one processor which executes instructions stored in at least one memory and/or at least one circuitry, being configured to perform thickening processing for a line to increase a width thereof, wherein

the thickening processing is;

performed for a line that has a density less than or equal to a predetermined density and includes a pixel having attribute information of a drawing object; and

not performed for a line that has a density less than or equal to the predetermined density and includes a pixel not having attribute information of the drawing object.

2. The information processing apparatus according to claim 1, wherein

the at least one controller is configured to further perform detection processing to detect the line having a density less than or equal to the predetermined density from the image data,

wherein the thickening processing is performed for the detected line that includes the pixel having the attribute information of the drawing object and is not performed for the detected line that includes a pixel not having the attribute information of the drawing object.

3. The information processing apparatus according to claim 2, wherein

the at least one controller is configured to detect a line having a width less than or equal to a predetermined width and having a density less than or equal to the predetermined density from the image data in the detection processing.

4. The information processing apparatus according to claim 1, wherein

the line having a density less than or equal to the predetermined density is a white line, and

the at least one controller is configured to perform determining processing to determine whether or not to perform the thickening processing for the white line based on attribute information on a pixel configuring the white line.

5. The information processing apparatus according to claim 1, wherein

the line having a density less than or equal to the predetermined density is a white line, and

the at least one controller is configured not to perform the thickening processing for the white line in a case where attribute information on a pixel configuring the white line is attribute information indicative of a non-drawing object.

6. The information processing apparatus according to claim 1, wherein

the line having a density less than or equal to the predetermined density is a white line, and

the at least one controller is configured:

to perform the thickening processing for the white line in a case where attribute information on a pixel configuring the white line is attribute information of a graphic object; and

not to perform the thickening processing in a case where attribute information on a pixel configuring the white line is attribute information of a background.

7. The information processing apparatus according to claim 1, wherein

the line having a density less than or equal to the predetermined density is a white line, and

the at least one controller is configured to:

receive a setting to set valid a mode of thickening the white line; and

perform the thickening processing for the white line in accordance with the setting.

8. The information processing apparatus according to claim 1, wherein

the line having a density less than or equal to the predetermined density is a white line, and

the at least one controller is configured:

to receive a setting to set invalid a mode of thickening the white line; and

not to perform the thickening processing for the white line in accordance with the setting.

9. The information processing apparatus according to claim 2, wherein

the at least one controller is configured to detect a line having a density less than or equal to the predetermined density by performing matching processing with a predetermined pattern in the detection processing.

10. The information processing apparatus according to claim 1, wherein

the at least one controller is configured to perform generation processing to generate the image data by interpreting page description language (PDL) data.

11. The information processing apparatus according to claim 1, wherein

the at least one controller is configured to perform:

generation processing to generate the image data by interpreting page description language (PDL) data; and

the thickening processing, in a case where a line width adjustment function that works for a predetermined PDL type is set valid in a PDL command included in the PDL data, for the line that has a density less than or equal to a predetermined density and includes the pixel having attribute information of the drawing object.

12. The information processing apparatus according to claim 1, wherein

the at least one controller is configured to:

perform generation processing to generate the image data by interpreting page description language (PDL) data;

receive a setting whether to set valid a line width adjustment function that works in a case where the PDL data is a predetermined PDL type; and

perform, in a case where the line width adjustment function is set valid in the setting, the thickening processing for the line that has a density less than or equal to a predetermined density and includes the pixel having attribute information of the drawing object.

13. The information processing apparatus according to claim 2, wherein

the at least one controller is configured to:

perform generate processing to generate the image data by interpreting page description language (PDL) data; and

further perform, in a case where a line width adjustment function that works for a predetermined PDL type is set valid in a PDL command included in the PDL data, the detection processing to detect a line having a density less than or equal to the predetermined density.

14. A control method of an information processing apparatus, the control method comprising:

performing thickening processing for a line to increase a width thereof; and

performing control so that the thickening processing is performed for a line that has a density less than or equal to a predetermined density and includes a pixel having attribute information of a drawing object and the thickening processing is not performed for a line that has a density less than or equal to a predetermined density and includes a pixel not having attribute information of the drawing object.

15. A non-transitory computer readable storage medium storing a computer program for causing a computer to execute a method of controlling an information processing apparatus, the method comprising:

performing thickening processing for a line to increase a width thereof; and

performing control so that the thickening processing is performed for a line that has a density less than or equal to a predetermined density and includes a pixel having attribute information of a drawing object and the thickening processing is not performed for a line that has a density less than or equal to a predetermined density and includes a pixel not having attribute information of the drawing object.