PORTABLE ELECTRONIC DEVICE WITH A CAMERA FUNCTION, AND IMAGE CAPTURING METHOD WITH AUTO EXPOSURE CONTROL
First Claim
1. A portable electronic device with camera function, comprising:
- a camera module; and
a controller, comprising;
a pre-view unit, configured to obtain a pre-view frame from the camera module;
an auto exposure control unit, comprising;
a block brightness calculation module, configured to divide the pre-view frame into a plurality of blocks and calculate representative brightness values of the plurality of blocks;
a brightness weight assignment module, configured to assign weight values to the plurality of blocks according to the representative brightness values;
a weighted brightness calculation module, configured to obtain a weighted brightness value by performing a weighted calculation on the representative brightness values of the blocks according to the weight values of the blocks; and
an exposure parameter setting module, configured to set at least one auto exposure parameter of the camera module based on the weighted brightness value; and
an image capture unit, configured to control the camera module for capturing images based on the auto exposure parameter.
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Accused Products
Abstract
A portable electronic device with camera function and an image capture method with auto exposure control. The disclosed method comprises the following steps: obtaining a pre-view frame from a camera module; dividing the pre-view frame into a plurality of blocks and calculating representative brightness values of the blocks; assigning weight values to the blocks according to the representative brightness values; obtaining a weighted brightness value by performing a weighted operation on the representative brightness values based on the weight values of the blocks; setting an auto exposure parameter of the camera module based on the weighted brightness value; and controlling the camera module for capturing images based on the auto exposure parameter.
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Citations
16 Claims
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1. A portable electronic device with camera function, comprising:
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a camera module; and a controller, comprising; a pre-view unit, configured to obtain a pre-view frame from the camera module; an auto exposure control unit, comprising; a block brightness calculation module, configured to divide the pre-view frame into a plurality of blocks and calculate representative brightness values of the plurality of blocks; a brightness weight assignment module, configured to assign weight values to the plurality of blocks according to the representative brightness values; a weighted brightness calculation module, configured to obtain a weighted brightness value by performing a weighted calculation on the representative brightness values of the blocks according to the weight values of the blocks; and an exposure parameter setting module, configured to set at least one auto exposure parameter of the camera module based on the weighted brightness value; and an image capture unit, configured to control the camera module for capturing images based on the auto exposure parameter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image capture method with auto exposure control, comprising:
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obtaining a pre-view frame from a camera module; dividing the pre-view frame into a plurality of blocks and calculating representative brightness values of the blocks; assigning weight values to the blocks according to the representative brightness values; obtaining a weighted brightness value by performing a weighted calculation on the representative brightness values based on the weight values of the blocks; setting at least one auto exposure parameter of the camera module based on the weighted brightness value; and controlling the camera module to capture image according to the auto exposure parameter. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An image capture method with auto exposure control, comprising:
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obtaining a pre-view frame from a camera module, wherein the pre-view frame contains a plurality of blocks; analyzing the pre-view frame, assigning a plurality of weight values according to representative brightness values of the blocks, and setting at least one auto exposure parameter of the camera module according to the representative brightness values and the weight values; and controlling the camera module for capturing images based on the at least one auto exposure control parameter, wherein the blocks with higher representative brightness values are assigned with higher weight values. - View Dependent Claims (14, 15, 16)
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Specification