US-20260129296-A1 - ELECTRONIC DEVICE AND IMAGE STABILIZATION METHOD THEREOF

US20260129296A1US 20260129296 A1US20260129296 A1US 20260129296A1US-20260129296-A1

Abstract

An electronic device and an image stabilization method thereof are provided. The method is adapted to the electronic device including an image capture module, and the image capture module includes an optical image stabilization system. The method includes the following steps. Motion information of the electronic device is detected. When the image capture module generates multiple consecutive images based on multiple frame periods, a non-exposure period of a first frame period among the frame periods of the image capture module is determined. During the non-exposure period of the first frame period, the optical image stabilization system is disabled from performing an optical image stabilization compensation operation based on the motion information.

Inventors

Jo-Fan WU
Wen-Ling Lin

Assignees

ASUSTEK COMPUTER INC.

Dates

Publication Date: 20260507
Application Date: 20250814
Priority Date: 20241106

Claims (10)

1 . An image stabilization method, adapted to an electronic device comprising an image capture module, the image capture module comprising an optical image stabilization (OIS) system, the method comprising: detecting motion information of the electronic device; determining a non-exposure time period of a first frame period among a plurality of frame periods of the image capture module when the image capture module generates a plurality of consecutive images based on the frame periods; and during the non-exposure time period of the first frame period, disabling the optical image stabilization system from performing an optical image stabilization compensation operation according to the motion information.
2 . The image stabilization method as claimed in claim 1 , further comprising: during an exposure time period of each of the frame periods, enabling the optical image stabilization system to perform the optical image stabilization compensation operation according to the motion information.
3 . The image stabilization method as claimed in claim 2 , wherein the step of during the non-exposure time period of the first frame period, disabling the optical image stabilization system from performing the optical image stabilization compensation operation according to the motion information comprises: during the non-exposure time period of the first frame period, suspending moving lens of the image capture module according to the motion information.
4 . The image stabilization method as claimed in claim 1 , wherein the step of during the non-exposure time period of the first frame period, disabling the optical image stabilization system from performing the optical image stabilization compensation operation according to the motion information comprises: obtaining an exposure end time point of the non-exposure time period of the first frame period; determining a compensation suspension time point according to the exposure end time point; and at the compensation suspension time point, issuing a disable signal to notify the optical image stabilization system to suspend performing the optical image stabilization compensation operation.
5 . The image stabilization method as claimed in claim 4 , wherein the step of determining the compensation suspension time point according to the exposure end time point comprises: adjusting the exposure end time point according to a time difference to obtain the compensation suspension time point, wherein the compensation suspension time point equals the exposure end time point minus the time difference.
6 . The image stabilization method as claimed in claim 4 , wherein the step of during the non-exposure time period of the first frame period, disabling the optical image stabilization system from performing the optical image stabilization compensation operation according to the motion information comprises: obtaining an exposure start time point of the exposure time period of a second frame period; determining a compensation start time point according to the exposure start time point; and at the compensation start time point, issuing an enable signal to notify the optical image stabilization system to resume performing the optical image stabilization compensation operation.
7 . The image stabilization method as claimed in claim 6 , wherein the step of determining the compensation start time point according to the exposure start time point comprises: adjusting the exposure start time point according to a time difference to obtain the compensation start time point, wherein the compensation start time point equals the exposure start time point minus the time difference.
8 . The image stabilization method as claimed in claim 6 , wherein when the optical image stabilization system suspends performing the optical image stabilization compensation operation at the exposure end time point of the first frame period, lens of the image capture module stays at a first lens position at the exposure end time point; when the optical image stabilization system resumes performing the optical image stabilization compensation operation at the exposure start time point of the second frame period, the lens of the image capture module starts moving from the first lens position.
9 . The image stabilization method as claimed in claim 1 , further comprising: determining a non-exposure time period of a second frame period among the frame periods of the image capture module when the image capture module generates the consecutive images based on the frame periods; and during the non-exposure time period of the second frame period, disabling the optical image stabilization system from performing the optical image stabilization compensation operation according to the motion information.
10 . An electronic device, comprising: an inertial sensor, configured to detect motion information of the electronic device; an image capture module, comprising an optical image stabilization system; and a processor, coupled to the image capture module, and configured to: determine a non-exposure time period of a first frame period among a plurality of frame periods of the image capture module when the image capture module generates a plurality of consecutive images based on the frame periods; and during the non-exposure time period of the first frame period, disable the optical image stabilization system from performing an optical image stabilization compensation operation according to the motion information.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority benefit of Taiwan application serial no. 113142467, filed on November 6, 2024. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. BACKGROUND Technical Field The disclosure relates to an electronic device and an image stabilization method thereof. Related Art With the advancement of technology, electronic devices with imaging capabilities have become ubiquitous in modern life. To address the issue of capturing blurry images caused by vibrations during photography, the Optical Image Stabilization (OIS) function, also known as the anti-shake or anti-vibration function, includes been developed to enhance image quality. In general, the hardware components of the OIS function can compensate for the vibrations of the imaging device to achieve image stabilization. It should be noted that the compensation angle of the OIS function is limited by the hardware and cannot provide unlimited compensation. To prevent issues such as the lens colliding with the module’s frame, the firmware design of OIS driver chips typically includes a compensation suppression mechanism to avoid collisions between the optical mechanism and the hardware boundary during intense shaking. In other words, as the lens approaches the hardware boundary, the amount of compensation is correspondingly suppressed. Consequently, when electronic devices capture consecutive images, the OIS function continues to compensate during the non-exposure periods of the image sensor. This makes it more likely for insufficient compensation to occur due to the compensation suppression mechanism. SUMMARY In some embodiments, an image stabilization method is provided, which is adapted to an electronic device including an image capture module. The image capture module includes an optical image stabilization system, and the image stabilization method includes the following steps. Motion information of the electronic device is detected. When the image capture module generates a plurality of consecutive images based on a plurality of frame periods, a non-exposure time period of a first frame period among the frame periods of the image capture module is determined. During the non-exposure time period of the first frame period, the optical image stabilization system is disabled from performing the optical image stabilization compensation operation according to the motion information. In some embodiments, an electronic device is provided, which includes an image capture module and a processor. The image capture module includes an optical image stabilization system. The processor is coupled to the image capture module and configured to perform the following operations. Motion information of the electronic device is detected. When the image capture module generates a plurality of consecutive images based on a plurality of frame periods, a non-exposure time period of a first frame period among the frame periods of the image capture module is determined. During the non-exposure time period of the first frame period, the optical image stabilization system is disabled from performing the optical image stabilization compensation operation according to the motion information. Based on the above, in the embodiments of the disclosure, when the image capture module captures multiple consecutive images, the optical image stabilization system may be controlled to temporarily suspend the optical image stabilization compensation operation during the non-exposure time period of the image sensor. As a result, since the lens of the optical image stabilization system can temporarily pause movement during non-exposure periods, the compensation amount of the optical image stabilization system during the actual exposure period is less likely to be suppressed. This significantly enhances the compensation efficiency of the optical image stabilization system. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating an electronic device according to an exemplary embodiment. FIG. 2 is a schematic diagram illustrating an optical image stabilization system according to an exemplary embodiment. FIG. 3 is a flowchart illustrating an image stabilization method according to an exemplary embodiment. FIG. 4A and FIG. 4B are schematic diagrams illustrating the disabling of optical image stabilization operations during the non-exposure time period according to an exemplary embodiment. FIG. 5 is a flowchart illustrating the disabling of optical image stabilization operations according to an exemplary embodiment. FIG. 6 is a schematic diagram illustrating the disabling of optical image stabilization operations during the non-exposure time periods of consecutive images according to an exemplary embodiment. DESCRIPTION OF THE EMBODIMENTS Reference will now be made in detail to exemplary embodiments of this case, examples of which are ill