Video processing apparatus and video processing method

1. A video processing apparatus comprising:

an input module configured to input a video signal;

a video processor including a sharpening processor configured to apply sharpening processing to pixels in a horizontal direction and pixels in a vertical direction, which are included in the video signal, and a correction module configured to apply image blur correction to the pixels in the horizontal direction and the pixels in the vertical direction based on an imaging model function; and

a detector configured to detect a type of the video signal from the video signal whether corresponding graphics or other than graphics,

wherein the sharpening processor comprises a sharpening horizontal filter for the sharpening processing to the pixels in the horizontal direction and a sharpening vertical filter for the sharpening processing to the pixels in the vertical direction, applies the sharpening processing by the sharpening horizontal filter and the sharpening vertical filter based on a first parameter depending on a graphics detection result by the detector, and applies the sharpening processing by the sharpening horizontal filter based on the first parameter and the sharpening processing by the sharpening vertical filter based on a second parameter depending on a detection result other than the graphics detection result by the detector,

the first parameter is used to vary a sharpening effect depending on a case in which the video signal includes few high-frequency components or a case in which the video signal includes many high-frequency components, and the second parameter is obtained by correcting the first parameter based on the imaging model function,

the correction module is configured to apply the image blur correction to the pixels in the horizontal direction based on the imaging model function and to apply the image blur correction to the pixels in the vertical direction by the sharpening vertical filter based on the second parameter depending on the detection result other than the graphics detection result by the detector.

2. The apparatus of claim 1 , further comprising a switching module configured to switch a characteristic of non-application of the image blur correction by the first parameter corresponding to a frequency band of the video signal based on the graphics detection result by the detector, and to switch a characteristic of the sharpening vertical filter to a characteristic of application of the image blur correction according to a second parameter obtained by correcting the first parameter based on the imaging model function depending on the detection result other than the graphics detection result by the detector.

3. The apparatus of claim 2 , further comprising a controller configured to change a characteristic of the sharpening horizontal filter according to the first parameter into a characteristic of non-application of the image blur correction.

4. The apparatus of claim 1 ,

wherein the video processor is configured to non-apply the image blur correction to the video signal based on the graphics detection result by the detector, and to apply the image blur correction to the video signal based on the detection result other than the graphics by the detector.

5. The apparatus of claim 1 , wherein the switching module is configured to control the characteristic of the sharpening vertical filter according to the first parameter based on the graphics detection result by the detector, and to control the characteristic of the sharpening vertical filter according to the second parameter based on the detection result other than the graphics detection result by the detector.

6. A video processing method for applying sharpening processing to pixels in a horizontal direction and pixels in a vertical direction, which are included in the video signal, and for applying image blur correction to the pixels in the horizontal direction and the pixels in the vertical direction based on an imaging model function, comprising:

detecting a type of the video signal from the video signal whether corresponding graphics or other than graphics,

wherein the sharpening processing is executed by a sharpening processor, the sharpening processor comprises a sharpening horizontal filter for the sharpening processing to the pixels in the horizontal direction and a sharpening vertical filter for the sharpening processing to the pixels in the vertical direction, applies the sharpening processing by the sharpening horizontal filter and the sharpening vertical filter based on a first parameter depending on a graphics detection result, and applies the sharpening processing by the sharpening horizontal filter based on the first parameter and the sharpening processing by the sharpening vertical filter based on a second parameter depending on a detection result other than the graphics detection result,

the first parameter is used to vary a sharpening effect depending on a case in which the video signal includes few high-frequency components or a case in which the video signal includes many high-frequency components, and the second parameter is obtained by correcting the first parameter based on the imaging model function,

the image blur correction is executed by a correction module, the correction module is configured to apply the image blur correction to the pixels in the horizontal direction based on the imaging model function and to apply the image blur correction to the pixels in the vertical direction by the sharpening vertical filter based on the second parameter depending on the detection result other than the graphics detection result.