Hand back projection method and device

Abstract

The invention provides a projection method and device for the back of the hand. Firstly, the laser emission angle is controlled from the angle closest to the wrist to the back of the hand, and the emission angle is adjusted according to the step angle, and an image is collected each time the angle is adjusted; Brightness analysis finds the brightest laser point, records the light intensity of each laser step angle corresponding to the laser point; sets the laser emission angle to the emission angle corresponding to the light intensity value of the maximum laser point before launching; scans the camera step by step Action, and collect an image at each step; find the laser point according to the brightness analysis in the collected image, then record the position of the laser point in the image and record its corresponding step angle, after scanning, find the laser point The stepping angle whose position is closest to the center is used as the optimal angle value; then set the projection angle of the projection device according to the optimal angle value for projection. Thus, it can be directly displayed on the back of the human hand without relying on the display screen.

Description

technical field [0001] The present invention relates to a wearable device, in particular to a projection method and device for a wearable device. Background technique [0002] Image display is the most important part of human-computer interaction. The current display is realized through display screen equipment, or through projection equipment to project images onto a large plane. The display screen is a large part of the electronic device, which occupies a large proportion of the weight and volume of the electronic device itself, making it inconvenient to carry the electronic device. However, the current projection equipment relies on a large plane body. When the user is in an open area or under natural conditions, it is difficult to find a natural plane body as a projection carrier. Therefore, it is very meaningful to have a method of human-computer interaction with users through projection without a screen. Contents of the invention [0003] One of the technical probl...

AI Technical Summary

Problems solved by technology

The display screen is a large part of the electronic device, which occupies a large proportion of the weight and volume of the electronic device itself, making it inconvenient to carry the electronic device

However, the current projection equipment relies on a large plane. When the user is in an open area or under natural conditions, it is difficult to find a natural plane as a projection carrier.

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