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Method and system for obtaining information by way of camera shooting, camera shooting device and information modulation device

A camera device and information modulation technology, applied in the field of optical communication, can solve problems such as inability to distinguish flicker

Inactive Publication Date: 2014-02-26
吴东辉
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] On the one hand, light can carry information after modulation. On the other hand, the natural attribute of light is to realize vision. Humans or animals have limited ability to distinguish the flickering frequency of light, which is the phenomenon of persistence of vision. The persistence of vision of humans is about 0.05 to 0.2 seconds, for example, the human eye cannot distinguish the flicker of the existing incandescent light. In fact, the incandescent light is a 50Hz flickering light, which means that the incandescent light carries at least a 50Hz sine wave information

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  • Method and system for obtaining information by way of camera shooting, camera shooting device and information modulation device
  • Method and system for obtaining information by way of camera shooting, camera shooting device and information modulation device

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Embodiment approach

[0083] For video images, the current video image frame rate is generally 50 frames per second, and high frame rate images can reach 1000 frames per second. The higher the frame rate, the more local pixels can be modulated and carry a lot of information. 50 frames per second video A certain pixel of the image can only carry a maximum of 50Bit information. If the visual effect of the video image cannot be changed, the amount of information carried is less. As an implementation plan: 1. Select the pixel area that needs to be marked on the image, that is, modulation 2. Remove the original image pixels in the modulation point area; 2. Modulate the pixels in the modulation point area to load additional information; 3. Composite the modulation point into the original image file. The disadvantage of this scheme is that the visual effect of the modulation point is an image spot.

[0084] Further, the code carried by the modulated signal is JS code (JavaScript scripting language) or exe...

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Abstract

The invention relates to an optimal communication method and system, in particular to a method and system for obtaining information by the way of camera shooting, a camera shooting device and an information modulation device. The method and system for obtaining information by the way of camera shooting, the camera shooting device and the information modulation device are characterized in that the system comprises a pick-up object and the camera shooting device, and the pick-up object gives out modulation light including additional information; the camera shooting device comprises a camera, a modulation pixel demodulation unit and a display unit; the camera obtains an image of the pick-up object, image pixels of the image of the pick-up object acquire the additional information included in the modulation light through the modulation pixel demodulation unit, and the additional information is displayed on a screen of the display unit. The method and system for obtaining information by the way of camera shooting, the camera shooting device and the information modulation device have the advantages that a modulator is used for modulating a light source so that the additional information can be loaded, and the camera shooting device is used for demodulating and recovering the additional information, can acquire the information of the pick-up object and can also be used for transmitting advertising information; by the way of local modulating of image signals, the camera shooting device can acquire local information of the image such as brands and linkage of personal clothes.

Description

technical field [0001] The invention relates to a method and system for optical communication, in particular to a method and system for acquiring information by taking pictures, a picture taking device and an information modulation device. Background technique [0002] On the one hand, light can carry information after modulation. On the other hand, the natural attribute of light is to realize vision. Humans or animals have limited ability to distinguish the flickering frequency of light, which is the phenomenon of persistence of vision. The persistence of vision of humans is about 0.05 to 0.2 seconds, for example, the existing incandescent light cannot be distinguished by the human eye. In fact, the incandescent light is a 50Hz flickering light, which means that the incandescent light carries at least one sine wave information of 50Hz. The object of the present invention is to use the discriminative ability of the camera to obtain the modulation information carried by the m...

Claims

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Application Information

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IPC IPC(8): H04N5/232G09F13/22G09F9/33
Inventor 吴东辉
Owner 吴东辉
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