Dual Preview Image Display for Camera Focus Alignment
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Solution Overview
Problem
Intelligent terminals display preview images in a full screen manner, leading to poor photography effects and user experiences due to difficulty in focusing and capturing expression changes, as users must use peripheral vision to observe the front-facing camera.
Innovation Solution
A method and apparatus that present a first preview image in full screen mode and a second, smaller preview image on the same screen, allowing users to adjust composition by displaying the second image at a reduced size, either superimposed or in a separate area, enabling better focus and improved photography effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the preview image is displayed in full screen manner, then the user can observe the preview image clearly, but the user's sight line diverges from the front-facing camera making it difficult to focus and capture expressions
Solution Approach 1:
The preview image is segmented into two distinct display regions: a first preview image displayed in full screen for clear observation, and a second reduced-size preview image positioned near the camera for focus alignment. This segmentation allows users to reference the full-screen image for detail while using the smaller image to maintain proper eye positioning relative to the camera.
Solution Approach 2:
The second reduced-size preview image acts as an intermediary element that bridges the gap between full-screen display and camera alignment. By providing a smaller reference image positioned near the camera, it serves as a visual mediator that helps users adjust their gaze without sacrificing the clarity provided by the full-screen display.
2Area of stationary object
If the preview image is displayed in full screen manner, then the display area is maximized, but the photography effect deteriorates due to poor composition control
Solution Approach 1:
The display area is segmented to simultaneously accommodate both a full-screen first preview image for maximizing display area and a second reduced-size preview image for composition control. This segmentation enables users to utilize the large display area while maintaining precise composition control through the smaller reference image.
Solution Approach 2:
Different regions of the display serve different functions: the full-screen first preview image provides overall visual quality and detail, while the localized second preview image near the camera provides composition guidance. This local quality differentiation allows each region to optimize for its specific purpose.
3Manufacturing precision
If a reduced size preview image is added for composition adjustment, then the photography effect is enhanced, but the device complexity increases
Solution Approach 1:
The second reduced-size preview image is essentially a copied and scaled version of the first preview image. Rather than creating a separate imaging system, the solution copies the existing preview data and displays it at a different size and position, thereby improving composition control without significantly increasing device complexity.
Data Source
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Figure 3~4A
Figure 4B~4C
AI summary
Embodiments of the present invention disclose a preview image presentation method and apparatus, and a terminal. The method includes: acquiring, by a terminal, an image captured by a camera; and presenting, on a screen of the terminal, a first preview image and a second preview image that are generated according to the image, where a size of the second preview image is less than a size of the first preview image. In the embodiments of the present invention, on an existing basis of displaying a first preview image in a full screen manner, a second preview image that is smaller than the first preview image may be presented additionally, so that a user can adjust photographic composition according to the second preview image, thereby enhancing a photography effect and improving user photography experience.