Method, apparatus, and program for image processing

• US 20030058349A1
• Filed: 09/23/2002
• Published: 03/27/2003
• Est. Priority Date: 09/26/2001
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Takemoto, Fumito
• Granted Patent: US 7,076,119 B2
• Time in Patent Office: Days
• US Class Current: 348/222.1
• CPC Class Codes: H04N 1/6086 by scene illuminant, i.e. conditions at the time of picture capture, e.g. flash, optical filter used, evening, cloud, daylight, artificial lighting, white point measurement, colour temperature

Abstract

Tag information that accompanies image data obtained by a digital camera is used efficiently and a high-quality image is reproduced. An image processing apparatus comprises a first color conversion unit for correcting a characteristic caused by the model of the digital camera by using an input device profile selected from memory according to digital camera model information and flash ON/OFF information included in the tag information, an image processing unit for judging a scene represented by the image data based on subject brightness information, subject distance information, and the flash ON/OFF information included in the tag information and for carrying out image processing by using an image processing condition set according to the scene, and a second color conversion unit for inferring an image type based on photographer information included in the tag information and for carrying out color reproduction processing according to the image type.

Claims

1. An image processing method for carrying out image processing on image data obtained by a digital camera, the image processing method comprising the steps of:

obtaining tag information that accompanies the image data;

judging a scene represented by the image data, based on the tag information;

setting an image processing condition in accordance with the scene; and

carrying out the image processing on the image data, based on the image processing condition that has been set.

2. An image processing method as defined in claim 1, wherein the step of judging the scene is the step of judging the scene based on the tag information by using a fuzzy inference method.

3. An image processing method as defined in claim 1 or 2, wherein the step of judging the scene is the step of judging the scene based on at least signal processing condition information representing signal processing carried out on the image data in the digital camera, subject distance information, and subject brightness information, all of which being included in the tag information.

4. An image processing method as defined in claim 3, further comprising the steps of:

selecting an input device profile in accordance with a model of the digital camera and a condition of the signal processing, based on camera model information regarding the digital camera and the signal processing condition information, both of which being included in the tag information;

carrying out pre-processing for canceling a characteristic attributed to the model of the digital camera on the image data according to the selected input device profile, before carrying out the image processing.

5. An image processing apparatus for carrying out image processing on image data obtained by a digital camera, the image processing apparatus comprising:

tag information input means for obtaining tag information that accompanies the image data;

scene judgment means for judging a scene represented by the image data, based on the tag information;

image processing condition setting means for setting an image processing condition in accordance with the scene; and

image processing means for carrying out the image processing on the image data, based on the image processing condition that has been set by the image processing condition setting means.

6. An image processing apparatus as defined in claim 5, wherein the scene judgment means judges the scene according to the tag information by using a fuzzy inference method.

7. An image processing apparatus as defined in claim 5 or 6, wherein the scene judgment means judges the scene represented by the image data, based on at least signal processing condition information representing signal processing carried out on the image data in the digital camera, subject distance information, and subject brightness information, all of which being included in the tag information.

8. An image processing apparatus as defined in claim 7, wherein the signal processing condition information includes at least one of flash ON/OFF information, lighting mode information, and sensitivity information.

9. An image processing apparatus as defined in claim 7, further comprising:

pre-processing means for carrying out pre-processing for canceling a characteristic attributed to a model of the digital camera on the image data, wherein

the pre-processing means selects an input device profile in accordance with the model of the digital camera model and a condition of the signal processing with reference to digital camera model information and the signal processing condition information included in the tag information, and carries out the pre-processing on the image data, by using the selected input device profile and

the image processing means carries out the image processing on the image data that have been subjected to the pre-processing carried out by the pre-processing means.

10. An image processing apparatus as defined in claim 5, further comprising:

post-processing means for carrying out post-processing in accordance with a type of an image represented by the image data, on the image data that have been subjected to the image processing, wherein

the post-processing means selects an output profile in accordance with the type of the image, and carries out the post-processing based on the output profile that has been selected.

11. An image processing apparatus as defined in claim 10, wherein the post-processing means enables determination of the type of the image based on photographer information.

12. An image processing apparatus as defined in claim 11, wherein the photographer information is included in the tag information.

13. A program for carrying out image processing on image data obtained by a digital camera, the program causing a computer to execute the procedures of:

judging a scene represented by the image data with reference to tag information that accompanies the image data;

setting an image processing condition in accordance with the scene; and

carrying out the image processing on the image data in accordance with the image processing condition that has been set.

14. A computer-readable recording medium storing a program for carrying out image processing on image data obtained by a digital camera, the program causing a computer to execute the procedures of:

judging a scene represented by the image data with reference to tag information that accompanies the image data;

setting an image processing condition in accordance with the scene; and

carrying out the image processing on the image data in accordance with the image processing condition that has been set.