Image capture apparatus
AssigneeCanon Kabushiki Kaisha
InventorShinya Hirai
Life of this patent
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Abstract
An image capture apparatus is provided. The image capture apparatus comprises a high frequency signal extraction unit for extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal, and a level setting unit for setting a level for removing a noise component from the high frequency signal, wherein if the input signal is obtained from a first area where the contrast is low, the level is set to a first level, and if the input signal is obtained from a second area where there is small pattern, the level is set to a second level lower than the first level.
Claims8
An image capture apparatus comprising:
- high frequency signal extraction means for extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- and
- level setting means for setting a level for removing a noise component from said high frequency signal;
- wherein said image capture apparatus can change said level in accordance with the frequency characteristic in a direction which has high correlation.
An image capture apparatus comprising:
- high frequency signal extraction means for extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- and
- level setting means for setting a level for removing a noise component from said high frequency signal;
- wherein said image capture apparatus is arranged to change said level depending on whether or not the color is a predetermined color and in accordance with the frequency characteristic in a direction which has high correlation.
An image capture apparatus comprising:
- high frequency signal extraction means for extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- and
- level setting means for setting a level for removing a noise component from said high frequency signal;
- wherein if said input signal is obtained from a first area where the contrast is low, said level is set to a first level;
- and
- wherein if said input signal is obtained from a second area where there is small pattern, said level is set to a second level lower than said first level.
An image capture apparatus comprising:
- high frequency signal extraction means for extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- and
- level setting means for setting a level for removing a noise component from said high frequency signal;
- wherein if said input signal is obtained from a first area which includes a specific color and low contrast, said level is set to a first level;
- and
- wherein if said input signal is obtained from a second area which includes the specific color and small pattern, said level is set to a second level lower than said first level.
An image processing method comprising:
- a step of extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- a step of setting a level for removing a noise component from said high frequency signal;
- and
- a step of changing said level in accordance with the frequency characteristic in a direction which has high correlation.
An image processing method comprising:
- a step of extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- a step of setting a level for removing a noise component from said high frequency signal;
- and
- a step of changing said level depending on whether or not the color is a predetermined color and in accordance with the frequency characteristic in a direction which has high correlation.
An image processing method comprising:
- a step of extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- a step of setting a level for removing a noise component from said high frequency signal;
- and
- a step of setting said level to a first level, if said input signal is obtained from a first area where the contrast is low;
- and
- a step of setting said level to a second level lower than said first level, if said input signal is obtained from a second area where there is small pattern.
An image processing method comprising:
- a step of extracting a high frequency signal of a frequency higher than a predetermined frequency from an input signal;
- a step of setting a level for removing a noise component from said high frequency signal;
- a step of setting said level to a first level, if said input signal is obtained from a first area which includes a specific color and low contrast;
- and
- a step of setting said level to a second level lower than said first level, if said input signal is obtained from a second area which includes the specific color and small pattern.
Dependencies are inferred from the claim text.