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US 2009/0268052 A1Published application
Image pickup apparatus and control method thereof
AssigneeCanon Kabushiki Kaisha
InventorKenji Takahashi
Life of this patent
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Abstract
In an image pickup apparatus, image data obtained by an image pickup unit is subjected to predetermined image processing, and an image is displayed on an electronic viewfinder screen based on the image data that has undergone the image processing. A specified color is determined based on color information included in a predetermined region of an image that is currently being displayed on the electronic viewfinder screen, and image processing parameters are produced so that color conversion is carried out on the image while eliminating color components of colors other than the determined specified color.
Claims19
An image pickup apparatus comprising:
- an image pickup unit;
- an image processing unit configured to process an image signal obtained by the image pickup unit;
- a recording unit configured to record the image signal that is outputted from the image processing unit;
- a display unit configured to display on an electronic viewfinder screen an image based on the image signal that is picked up by the image pickup unit and outputted from the image processing unit;
- a color determination unit configured to determine a color value based on color information included in a predetermined region of an image that is being displayed on the electronic viewfinder screen;
- a color conversion parameter determination unit configured to determine color conversion parameters for leaving the color value determined by the color determination unit and converting a color component value included in the image signal other than the color value into a predetermined color value;
- an inputting unit configured to input an instruction for causing the color determination unit to start determining the color value;
- and
- an execution unit configured to execute an exposure control to appropriately set an exposure of the image pickup unit when the instruction is inputted by the inputting unit,
- wherein the image signal is processed by the image processing unit based on the parameters determined by the color conversion parameter determination unit and the processed image is displayed by the display unit, and
- wherein the color determination unit does not determine the color value using an image picked up by the image pickup unit before the exposure control is executed by the execution unit.
8 more elements
An image pickup apparatus comprising:
- an image pickup unit;
- an image processing unit configured to process an image signal obtained by the image pickup unit;
- a recording unit configured to record the image signal that is outputted from the image processing unit;
- a display unit configured to display on an electronic viewfinder screen an image based on the image signal that is picked up by the image pickup unit and outputted from the image processing unit;
- a color determination unit configured to determine a color value based on color information included in a predetermined region of an image that is being displayed on the electronic viewfinder screen;
- a color conversion parameter determination unit configured to determine color conversion parameters for leaving the color value determined by the color determination unit and converting a color component value included in the image signal other than the color value into a predetermined color value;
- an inputting unit configured to input an instruction for causing the color determination unit to start determining the color value;
- and
- an execution unit configured to execute an exposure control to appropriately set an exposure of the image pickup unit when the instruction is inputted by the inputting unit,
- wherein the image signal is processed by the image processing unit based on the parameters determined by the color conversion parameter determination unit and the processed image is displayed by the display unit, and
- wherein the color determination unit determines the color value using an image picked up by the image pickup unit after the exposure control is executed by the execution unit.
8 more elements
A method of controlling an image pickup apparatus, the method comprising:
- an image pickup step of converting light from a subject into an image signal using an image pickup element;
- an image processing step of processing the image signal obtained in the image pickup step;
- a display step of displaying on an electronic viewfinder screen an image based on the image signal that is picked up in the image pickup step and outputted in the image processing step;
- a color determination step of determining a color value based on color information included in a predetermined region of an image that is being displayed on the electronic viewfinder screen;
- a color conversion parameter determination step of determining color conversion parameters for leaving the color value determined in the color determination step and converting a color component value included in the image signal other than the determined color value into a predetermined color value;
- a control step of processing the image signal in the image processing step based on the parameters determined in the color conversion parameter determination step and of displaying the processed image signal in the display step;
- an inputting step of inputting an instruction for starting determining the color value in the color determination step;
- and
- an execution step of executing an exposure control to appropriately set an exposure of the image pickup element when the instruction is inputted in the inputting step, wherein in the color determination step, the color value using an image picked up by the image pickup unit before the exposure control is executed by the execution unit is not determined.
6 more elements
A method of controlling an image pickup apparatus, the method comprising:
- an image pickup step of converting light from a subject into an image signal using an image pickup element;
- an image processing step of processing the image signal obtained in the image pickup step;
- a display step of displaying on an electronic viewfinder screen an image based on the image signal that is picked up in the image pickup step and outputted in the image processing step;
- a color determination step of determining a color value based on color information included in a predetermined region of an image that is being displayed on the electronic viewfinder screen;
- a color conversion parameter determination step of determining color conversion parameters for leaving the color value determined in the color determination step and converting a color component value included in the image signal other than the determined color value into a predetermined color value;
- a control step of processing the image signal in the image processing step based on the parameters determined in the color conversion parameter determination step and of displaying the processed image signal in the display step;
- an inputting step of inputting an instruction for starting determining the color value in the color determination step;
- and
- an execution step of executing an exposure control to appropriately set an exposure of the image pickup element when the instruction is inputted in the inputting step,
- wherein in the color determination step, the color value using an image picked up by the image pickup unit after the exposure control is executed by the execution unit is determined.
7 more elements
Dependencies are inferred from the claim text.