Projection equipment automatic focusing method, projection equipment and computer readable storage medium
A projection device and auto-focus technology, which is applied in the field of projection, can solve problems such as impact, large noise and interference signals, and blurred projection images, and achieve the effects of improving accuracy, removing interference signals and noise, and improving accuracy
Inactive Publication Date: 2019-04-30
深圳市TCL高新技术开发有限公司
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In view of this, the present invention provides an automatic focusing method for a projection device, a projection device and a computer-readable storage medium, so as to solve the problem that a large amount of noise and interference will appear in the picture taken by the camera of the projection TV in the prior art due to the influence of light. signal, which seriously affects the judgment of the projection TV system on the effect of auto focus, and may cause blurred projection images after auto focus
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0027] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0028] figure 1 It is a topological diagram of the projection device provided by the embodiment of the present invention when it is in use. For convenience of description, only the parts related to this embodiment are shown.
[0029] see figure 1 As shown, the topol...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an automatic focusing method of projection equipment, the projection equipment and a computer readable storage medium. The method comprises the steps that in the automatic focusing process, if the focal length changes, shooting a curtain projection image of projection equipment; Performing gray scale processing on the curtain projection image to obtain a gray scale image; Performing spatial domain filtering processing on the grayscale image; Performing time domain filtering processing on the gray level image after the spatial domain filtering processing; Calculating thesharpness value of the gray level image after the time domain filtering processing; Judging whether the sharpness value of the grayscale image reaches a preset maximum sharpness value or not; If yes,finishing automatic focusing; And if not, returning to the automatic focusing process, and if the focal length is changed, shooting a curtain projection image of the projection equipment to circularlyexecute the process. According to the invention, interference signals and noise points in a shot image can be removed, and the accuracy of automatic focusing effect judgment is improved, so that theprojection equipment can display a clear projection picture after automatic focusing.
Description
technical field [0001] The invention belongs to the field of projection technology, and in particular relates to an automatic focusing method of a projection device, a projection device and a computer-readable storage medium. Background technique [0002] With the improvement of living standards, people's demand for large-screen TVs is increasing, which promotes the development of projection TVs and makes projection TVs gradually enter people's lives. Projection TV can achieve a larger screen size than LCD TV, bringing more shocking multimedia entertainment enjoyment. [0003] Since the projection TV displays images by projecting images on the screen through the convex lens through the light source, the lens and the screen are not on the same device, so the distance between each projection TV and the screen is different when deployed, so it is easy Causes the image projected by the TV on the screen to be blurry, requiring the projection TV to be refocused every time it is m...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04N9/31
CPCH04N9/317
Inventor 王丛华
Owner 深圳市TCL高新技术开发有限公司