Projection apparatus and operating method thereof

By generating a corrected image, the processor calculates the reference position and sets the pixel value, thus solving the image distortion problem caused by fisheye lens projection and achieving a distortion-free image projection effect.

CN122460060APending Publication Date: 2026-07-24SAMSUNG ELECTRONICS CO LTD
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Patent Information

Application Number
CN202480083087.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-12-27
Filing Date
2024-10-15
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

When existing projection devices project images using ultra-wide-angle lenses, the images are prone to distortion, especially when using fisheye lenses, where the central area of ​​the image shrinks while the outer area is magnified, resulting in severe distortion.

Method used

By generating a corrected image, the processor calculates multiple reference positions, sets the pixel values ​​of the corrected image based on the pixel coordinates of the input image and the characteristics of the fisheye lens, and reverses the distortion to generate a barrel distortion corrected image, which is then projected onto the screen through the fisheye lens.

Benefits of technology

It effectively corrects image distortion caused by fisheye lens projection, making the central and outer areas of the image displayed on the screen the same size, avoiding distortion and achieving distortion-free image projection.

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Abstract

A projection apparatus and an operating method thereof are provided. The projection apparatus includes: a projector; a fisheye lens; a memory to store one or more instructions; and at least one processor. The one or more instructions are executed individually or in combination by the at least one processor, such that the projection apparatus calculates a plurality of reference positions based on pixel coordinates of each of the plurality of pixels of the corrected image, references pixel values of the input image corresponding to each of the calculated plurality of reference positions, a setting unit that sets a pixel value of each of a plurality of pixels of a correction image to generate a correction image that corrects distortion of an input image to be projected onto a screen through the fisheye lens; and controlling the projector such that the generated correction image is projected onto the screen through the fisheye lens.
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