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Real picture watermark generation method and system based on LED (Light Emitting Diode) modulation

A technology of LED lights and pictures, which is applied in semiconductor devices of light-emitting elements, image data processing, image data processing, etc., can solve the problem of not being able to generate watermarks from physical images, and achieve the effect of overcoming watermark generation

Inactive Publication Date: 2017-09-22
SYSU CMU SHUNDE INT JOINT RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a watermark generation method for entity images based on LED modulation in order to solve the defect that the existing technology cannot generate watermarks for entity images.

Method used

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  • Real picture watermark generation method and system based on LED (Light Emitting Diode) modulation
  • Real picture watermark generation method and system based on LED (Light Emitting Diode) modulation
  • Real picture watermark generation method and system based on LED (Light Emitting Diode) modulation

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Embodiment 1

[0021] Such as figure 1 As shown, the method provided by the invention specifically includes the following steps:

[0022] S1. Arrange LED lights around the picture, and then modulate a set of control signals for the LED lights;

[0023] S2. Input the modulated control signal into the LED light to make the LED light flicker, and project the light from the flickering LED light on the physical picture. At this time, the flickering LED light forms bright and dark stripes in time sequence. The dark and alternate stripes serve as the corresponding watermark information.

[0024] In the above solution, the light emitted by the flashing LED lights is projected on the physical picture, so when a camera or camera is used to take pictures of the physical picture, the photographs taken will form a corresponding black and white pattern in the photo due to the flashing of the LED lights. The stripes, these stripes are the watermark of the physical image.

[0025] In this embodiment, the...

Embodiment 2

[0028] This embodiment provides a system applying the method of Embodiment 1, such as figure 2 As shown, the specific scheme is as follows:

[0029] Including signal generator, signal modulator, switch circuit and LED lamp, wherein the signal generator is connected to the signal modulator, the anode of the LED lamp is connected to 5V voltage, the cathode of the LED lamp is connected to one end of the switch circuit, and the other end of the switch circuit The control terminal of the switch circuit is connected to the output terminal of the signal modulator; wherein the signal generator is used to generate a set of control signals for the LED lamp, and the signal modulator is used to modulate the control signals.

[0030] In the above solution, the control terminal of the switch circuit is connected to the output terminal of the signal modulator. When the control signal is at a high level at the current moment, both ends of the switch circuit are turned on. At this time, the L...

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Abstract

The invention relates to a real picture watermark generation method and system based on LED (Light Emitting Diode) modulation. LED lamps are arranged around a picture, and then, one group of control signals are modulated for the LED lamps; the modulated control signals are input into the LED lamps to enable the LED lamps to flicker, light emitted from the flickering LED lamps is projected to the real picture, the LED lamps which flicker at the moment form bright and dark alternate stripes on a time sequence, and the bright and dark alternate stripes are taken as corresponding watermark information.

Description

technical field [0001] The present invention relates to the field of LED modulation, and more specifically, to a method and system for generating a physical image watermark based on LED modulation. Background technique [0002] In the prior art, when protecting the intellectual property rights of pictures, watermarks are generally generated on the pictures. However, this method can only generate watermarks for captured virtual pictures, but cannot generate watermarks for physical pictures. Contents of the invention [0003] In order to solve the above defect that the existing technology cannot generate watermarks for entity images, the present invention provides a method for generating entity image watermarks based on LED modulation. [0004] For realizing above-mentioned purpose of the invention, the technical scheme that adopts is: [0005] A watermark generation method for physical pictures based on LED modulation. LED lights are arranged around the picture, and then ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00H05B33/08F21Y115/10H05B44/00
CPCG06T1/0021F21Y2115/10H05B45/00Y02B20/30
Inventor 郭远祥叶涛
Owner SYSU CMU SHUNDE INT JOINT RES INST