A zoom method and device
An axial direction and feature point technology, applied in the field of zooming methods and devices, can solve the problems of poor projection image quality, cumbersome process, time-consuming and the like
Active Publication Date: 2020-10-30
CHENGDU XGIMI TECH CO LTD
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Problems solved by technology
[0002] The size of the picture projected by the existing projection electronic equipment depends on the distance between the equipment and the projection wall. The farther the distance is, the larger the size of the projection picture will be. If the scale is too large, it will further lead to poor projection quality.
In use, if the projection device can only be placed at a relatively long distance, but needs a moderate screen size, it is necessary to manually adjust the remote control to achieve it. The process is cumbersome and time-consuming
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[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0057] It should be noted that like numerals and let...
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An embodiment of the present invention provides a zooming method and device, which are applied to a projection device connected to an imaging device. The projection device pre-stores a coded information image containing a set of feature points. The method includes: projecting the coded information image, and Receive the captured image of the projected encoded information image sent by the camera device; extract the feature point set in the captured image and match it with the feature point set in the encoded information image; calculate the projected depth value according to the successfully matched feature points ; Adjust the size of the projected coded information image according to the projection depth value, and adjust the size of the projected picture according to the size. In the zoom solution provided by the present invention, the projection depth value, that is, the distance between the projection surface and the projection device, is calculated through feature point matching. According to the distance to determine the size of the appropriate projected picture, the method can automatically adjust the picture size of the projected image according to the projection depth value, saving time and the process is convenient.
Description
technical field [0001] The present invention relates to the technical field of projection, and in particular, to a zooming method and device. Background technique [0002] The size of the picture projected by the existing projection electronic equipment depends on the distance between the equipment and the projection wall. In use, if the projection device can only be placed at a long distance, but a moderate screen size is required, it is necessary to manually adjust the remote control, which is a cumbersome and time-consuming process. Therefore, it is particularly important to realize a solution that can automatically adjust the size of the projected image according to the distance between the projection device and the projection wall. SUMMARY OF THE INVENTION [0003] In view of this, the purpose of the present invention is to provide a zooming method and device to solve the above problems. [0004] A preferred embodiment of the present invention provides a zooming met...
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IPC IPC(8): H04N5/232H04N9/31
CPCH04N9/317H04N9/3185H04N9/3188H04N23/67
Inventor 钟波肖适刘志明
Owner CHENGDU XGIMI TECH CO LTD