UAV Digital Zoom via Cropping and Resizing
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Solution Overview
Problem
Traditional digital zoom in unmanned aerial vehicles (UAVs) fails to enhance image clarity, as it only scales the image size without improving detail, leading to poor image quality when zoomed in.
Innovation Solution
A method and apparatus for UAVs that capture an initial image, crop a region based on a digital zoom factor, and then zoom the cropped image to achieve a higher resolution, ensuring the image is displayed nondestructively on a terminal device, with the zoom image resolution being at least as high as the display resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If traditional digital zoom is applied to scale the original image size, then the image can be displayed larger on the terminal screen, but the image details cannot be displayed more clearly and the image quality deteriorates
Solution Approach 1:
The patent divides the original image into multiple sub-images through cropping operations before zooming. By segmenting the image into smaller regions and processing each separately, the system maintains higher effective resolution in the zoomed display. The image capturing apparatus captures multiple sub-images at different positions, which are then processed to create the final zoomed image, thereby preserving detail clarity while achieving larger display size.
Solution Approach 2:
The patent performs preliminary cropping of the original image to obtain sub-images before the zooming operation. This preliminary action of dividing the image into manageable segments allows subsequent zooming to be performed on smaller, higher-resolution portions rather than scaling up the entire original image, thus maintaining image quality while enabling larger display.
2Adaptability or versatility
If the image is zoomed in by traditional digital zoom, then the image can fill the display screen, but the image resolution effectively decreases leading to poor image quality
Solution Approach 1:
The system segments the original image into multiple sub-images that can be independently processed and displayed. By dividing the image into smaller units with higher effective resolution, the system can adapt to different display screen sizes and resolutions while maintaining measurement precision and image quality in the zoomed view.
Solution Approach 2:
The patent transitions from a single-dimensional zoom approach to a multi-dimensional processing approach by capturing and processing multiple sub-images at different positions. This dimensional change allows the system to achieve better display adaptability while preserving resolution through composite processing of multiple image segments.
3Productivity
If only the image size is scaled without cropping, then the processing is simple and fast, but the image details are lost and clarity is reduced
Solution Approach 1:
The patent implements segmentation of the original image into multiple sub-images through cropping, which enables parallel processing of smaller image segments. This segmentation approach maintains processing efficiency while significantly improving image detail preservation and clarity in the final zoomed output, resolving the contradiction between processing speed and detail quality.
Data Source
AI summary
The embodiments are a zoom method and apparatus, an unmanned aerial vehicle, an unmanned aircraft system and a storage medium. The zoom method is applied to an unmanned aerial vehicle including an image capturing apparatus and the method includes: controlling the image capturing apparatus to capture an initial image, where a resolution of the initial image is W0*H0 and an area of the initial image is S0; obtaining a cropped image according to the initial image, where the cropped image is an image with an area of S cropped from a preset region in the initial image, S0/S=C and C is a digital zoom factor of the image capturing apparatus; and obtaining a zoom image according to the cropped image, where the zoom image is an image obtained by zooming the cropped image by C/A times, a resolution of the zoom image is W1*H1, A=W0/W1 and C≤A.