Method and device for detecting power stability of image sensor
AssigneeASUSTeK COMPUTER INC.
InventorsChen-Jeh Wu, Hsiu-Ting Yang, Chun-Hao Liao
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Abstract
A method and a device for detecting power stability of an image sensor are provided. The method includes: providing first power by a power supply circuit to the image sensor based on a first electronic configuration; during a period that the image sensor is driven by the first power, capturing at least one first test image by the image sensor; analyzing image content of the first test image to obtain first noise distribution information of the first test image; and generating a first evaluation information corresponding to the first electronic configuration according to the first noise distribution information.
Claims18
A method for detecting power stability of an image sensor, comprising:
- providing first power by a power supply circuit to the image sensor based on a first electronic configuration;
- capturing at least one first test image by the image sensor during a period that the image sensor is driven by the first power;
- analyzing image content of the at least one first test image to obtain first noise distribution information of the at least one first test image, comprising:
- converting the at least one first test image into at least one grayscale image;
- and
- obtaining the first noise distribution information according to a numerical value distribution of a plurality of pixel values in at least one pixel position set in the at least one grayscale image;
- and
- generating first evaluation information corresponding to the first electronic configuration according to the first noise distribution information.
A device for detecting power stability of an image sensor, comprising:
- a power supply circuit;
- an image sensor, coupled to the power supply circuit;
- and
- a processor, coupled to the image sensor,
- wherein the power supply circuit is used to provide first power to the image sensor based on a first electronic configuration, and
- the processor is used to:
- capture at least one first test image by the image sensor during a period that the image sensor is driven by the first power;
- analyze image content of the at least one first test image to obtain first noise distribution information of the at least one first test image, wherein the first noise distribution information comprises a first noise variation evaluation value, and the first noise variation evaluation value reflects a variation degree of noise among different pixel position sets in a single test image;
- and
- generate first evaluation information corresponding to the first electronic configuration according to the first noise distribution information.
Dependencies are inferred from the claim text.