Automatic exposure control method and device for imaging equipment

Abstract

The invention discloses an automatic exposure control method and device for imaging equipment. Each exposure parameter is divided into a plurality of sections, each section is called as a sub exposure line, and the sub exposure lines are sequenced and then combined to form a main exposure line of the imaging equipment. After the imaging equipment is turned on, the deviation between a current screen brightness and a target screen brightness is judged, the exposure parameters are adjusted according to the main exposure line of the imaging equipment if the deviation exists, and the exposure parameters are not adjusted if the current screen brightness is within the range of the target screen brightness. The automatic exposure control device for the imaging equipment comprises a control module, a brightness evaluation module and an exposure parameter adjusting module. The method and the device are universal, the exposure parameters can be adjusted into reasonable values under a normal lighting condition, imaging effects are optimized, the exposure parameters can be adjusted into maximum values under an extreme lighting condition, the imaging effects cannot be worse than those of a traditional scheme, and overexposure can be effectively suppressed.

Description

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AI Technical Summary

Benefits of technology

This technology uses an image sensor called LCD (Liquid Crystal Display) camera or CMOS cameras to capture images from different angles during photography. By dividing these exposures into smaller areas based on their luminance levels, this helps improve overall quality pictures by reducing excessive glare caused by high ambient illumination without losing too much detail when viewed at low angle viewpoints. Additionally, there are several methods described within the scope of this new approach to automatically expose each line separately before capturing another frame instead of repeating all them once every other time. These techniques help save battery life more efficiently and ensure consistent results across multiple frames captured simultaneously. Overall, this innovation improves the performance and efficiency of electronic devices such as digital still cameras.

Problems solved by technology

This patent describes different ways to achieve optimum performance settings during photography without sacrificing quality or usable images. However, current methods have drawbacks including lack of flexibility in controlling factors based upon environmental conditions, excessive sensitivity values resulting from increased ambient levels, insufficient exposures caused by low scene contrast ratio, difficulty in achieving high dynamic ranges, unstable operation modes leading to underestimation of detail, and potential issues associated with overexposed scenes where details may appear blurred compared to their surroundings.

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