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US 7,804,526 B2Granted
Auto white balance method using windows of a plurality of windows that form an image and image photographing apparatus using the same
AssigneeSamsung Electronics Co., Ltd.
InventorHyung-jin Lee
Life of this patent
Estimating the term…
Abstract
An auto white balance (AWB) method and an image photographing apparatus using the same. The AWB method includes selecting parts of a plurality of windows that form an image, and performing an AWB of the image, based on color difference signals of the selected windows, thereby reducing a time to transmit AWB data to calculate color difference integration, i.e., AWB data to be used to perform the AWB, to reduce the extent of calculation to calculate the color difference integration, and efficiently to perform the AWB of the image.
Claims31
An auto white balance (AWB) method, comprising:
- selecting windows from a plurality of windows that form an image if a photographing mode is a high speed mode;
- and
- performing an AWB of the image, based on color difference signals of the selected windows,
- wherein a number of the selected windows and high speed mode are directly determined by a user through a menu screen on a display.
1 more element
An image photographing apparatus, comprising:
- an AWB unit to select windows from of a plurality of the windows that form the image if a photographing mode is a high speed mode;
- and
- a controller to perform an AWB of the image, based on color difference signals of the selected windows,
- wherein a number of the selected windows and high speed mode are directly determined by a user through a menu screen on a display.
1 more element
An auto white balance (AWB) method, comprising:
- selecting portions of windows of an image if a photographing mode is a high speed mode;
- and
- performing an AWB of the image by changing gains of signals corresponding to the selected portions,
- wherein a number of the selected windows and high speed mode are directly determined by a user through a menu screen on a display.
1 more element
An image photographing apparatus, comprising:
- a selection unit to select portions of windows of an image if a photographing mode is a high speed mode;
- an automatic white balancing unit to calculate color differences of the selected portions;
- and
- a digital signal processor (DSP) to change gains of the selected portions based on the calculated color differences,
- wherein a number of the selected windows and high speed mode are directly determined by a user through a menu screen on a display.
2 more elements
An auto white balance (AWB) method, comprising:
- converting an optical image signal into a digital image signal;
- dividing the digital image signal into a plurality of windows and calculating color differences of a selected portion of the windows if a photographing mode is a high speed mode;
- determining a plurality of gain values corresponding to the respective calculated color differences;
- and
- adjusting a plurality of gains of the digital image signal using the determined plurality of gain values,
- wherein a number of the selected windows and high speed mode are directly determined by a user through a menu screen on a display.
3 more elements
An image photographing apparatus, comprising:
- a pick up unit to convert an optical image signal from a lens into a digital image signal;
- an automatic white balancing unit to divide the digital image signal into a plurality of windows and calculate color differences of a selected portion of the windows if a photographing mode is a high speed mode;
- a controller to determine a plurality of gain values corresponding to the calculated color differences;
- and
- a gain adjuster to adjust a plurality of gain values of the digital image signal using the plurality of gain values corresponding to the calculated color differences,
- wherein the portion of windows selected and high speed mode are directly determined by a user through a menu screen on a display.
3 more elements
An auto white balance (AWB) method, comprising:
- determining a photographing mode of a picked-up image;
- dividing the picked-up image into a plurality of windows;
- selecting a portion of windows from the plurality of windows if the photographing mode is a high speed mode, the portion corresponding to the a number corresponding to the photographing mode;
- calculating color differences of the selected portion of windows;
- and
- adjusting gains of the picked-up image based on the calculated color differences,
- wherein a number of the selected windows and high speed mode are directly determined by a user through a menu screen on a display.
4 more elements
An auto white balance (AWB) apparatus, comprising:
- a pick up unit to pick up an image;
- an automatic white balancing unit to determine a photographing mode, divide the pick-ed up image into a plurality of windows, select a portion of the windows if the photographing mode is a high speed mode, the selected portion corresponding to a number corresponding to the photographing mode, and calculate color differences of the selected portion of the windows;
- and
- a controller to adjust gains of the pick-ed up image based on the calculated color differences,
- wherein the portion of windows selected and high speed mode are directly determined by a user through a menu screen on a display.
2 more elements
Dependencies are inferred from the claim text.