Edge enhancement method and apparatus

• US 8,319,898 B2
• Filed: 04/18/2008
• Issued: 11/27/2012
• Est. Priority Date: 04/27/2007
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ueno, Masafumi, Yamamoto, Kenichiroh, Yoshii, Takashi, Furukawa, Hiroyuki, Yoshida, Yasuhiro, Tsubaki, Ikuko
• Primary Examiner(s): HAROLD, JEFFEREY F
• Assistant Examiner(s): Desir, Jean W
• Application Number:
  US12/530,145
• Publication Number:
  US 20100110300A1
• Time in Patent Office: 1,684 Days
• Field of Search: 348/625, 348/627, 348/606, 348/607, 348/620, 348/699, 348/700, 348/701, 382/266, 382/275, 375/240.27, 375/240.16, 345/611, 358/447, 358/3.27
• US Class Current: 348/625
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2320/106 Determination of movement vectors or equivalent parameters within the image
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: H04N 5/145 Movement estimation for video coding H04N19/51
• CPC Class Codes: H04N 7/0132 the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction
• CPC Class Codes: H04N 7/014 involving the use of motion vectors motion estimation and compensation in video coding H04N19/51

Abstract

An image processing device, method, an image display device and method which can obtain a high-definition display image by properly controlling processing of reducing the blur of a displayed image caused by the time integration effect of an image sensor. The image display device comprises a motion detection part (1) which detects the moving amount of an input image signal, and an edge emphasis part (2) which subjects the input image signal to edge emphasis processing, and the image display device increases an edge emphasis degree of edge emphasis processing to an area where the moving amount of the input image signal is large. The image display device comprises a genre judgment part (3) which judges the genre classification which the input image signal is connected with according to genre information obtained from outside of the device, and a control part (4) which controls the edge emphasis part (2) to reduce the edge emphasis degree of the edge emphasis processing or to avoid the edge emphasis processing even in the area where the moving amount of the input signal is large when the input image signal is connected with a predetermined genre.

Claims

1. An image display device comprising:

a detecting portion that detects a motion amount of an input image signal; and

an edge enhancing portion that executes edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

a control portion is included that reduces the edge enhancement level of the edge enhancement processing or does not execute the edge enhancement processing if it is recognized that a high-frequency component included in the input image signal is not attenuated in the course of generation of the input image signal even in the area having a larger motion amount of the input image signal based on genre information indicative of a content type that the input image signal belongs to.

2. An image display device comprising:

a detecting portion that detects a motion amount of an input image signal; and

an edge enhancing portion that executes edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

a control portion is included that reduces the edge enhancement level of the edge enhancement processing or does not execute the edge enhancement processing in an area where combined with a computer graphic image based on CG composite position information indicative of a screen area position where combined with a computer graphic image is combined with the input image signal.

3. An image display device comprising:

a detecting portion that detects a motion amount of an input image signal; and

an edge enhancing portion that executes edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

a control portion is included that reduces the edge enhancement level of the edge enhancement processing or does not execute the edge enhancement processing if a depth of field is shallow even in the area having a larger motion amount of the input image signal based on camera information indicative of the depth of field at the time of generation of the input image signal using an imaging device.

4. An image display device comprising:

a detecting portion that detects a motion amount of an input image signal; and

an edge enhancing portion that executes edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

a control portion is included that reduces the edge enhancement level of the edge enhancement processing or does not execute the edge enhancement processing if it is recognized that a high-frequency component included in the input image signal is not attenuated in the course of generation of the input image signal even in the area having a larger motion amount of the input image signal based on image tone mode information indicative of an image tone mode selected and indicated by a user from among a plurality of image tone modes prearranged for setting and adjusting an image quality of a displayed image.

5. An image display method comprising:

a detecting step for detecting a motion amount of an input image signal; and

an edge enhancing step for executing edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

the edge enhancement level of the edge enhancement processing is reduced or the edge enhancement processing is not executed if it is recognized that a high-frequency component included in the input image signal is not attenuated in the course of generation of the input image signal even in the area having a larger motion amount of the input image signal based on genre information indicative of a content type that the input image signal belongs to.

6. An image display method comprising:

a detecting step for detecting a motion amount of an input image signal; and

an edge enhancing step for executing edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

a control portion is included that reduces the edge enhancement level of the edge enhancement processing or does not execute the edge enhancement processing in an area where combined with a computer graphic image based on CG composite position information indicative of a screen area position where a computer graphic image is combined with the input image signal, and

the edge enhancement level of the edge enhancement processing is reduced or the edge enhancement processing is not executed if it is recognized that a high-frequency component included in the input image signal is not attenuated in the course of generation of the input image signal even in the area having a larger motion amount of the input image signal based on CG composite information indicative of a screen area position combined with a computer graphic image in the input image signal.

7. An image display method comprising:

a detecting step of detecting a motion amount of an input image signal; and

an edge enhancing step of executing edge enhancement processing for the input image signal,

the image display method of increasing an edge enhancement level of the edge enhancement processing for an area having a larger motion amount of the input image signal,

the image display method comprising reducing the edge enhancement level of the edge enhancement processing or not executing the edge enhancement processing if a depth of field is shallow even in the area having a larger motion amount of the input image signal based on camera information indicative of the depth of field at the time of generation of the input image signal using an imaging device.

8. An image display method comprising:

a detecting step for detecting a motion amount of an input image signal; and

an edge enhancing step for executing edge enhancement processing to the input image signal, and

increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein

the edge enhancement level of the edge enhancement processing is reduced or the edge enhancement processing is not executed if it is recognized that a high-frequency component included in the input image signal is not attenuated in the course of generation of the input image signal even in the area having a larger motion amount of the input image signal based on image tone mode information indicative of an image tone mode selected and indicated by a user from among a plurality of image tone modes prearranged for setting and adjusting an image quality of a displayed image.