Image data obtaining method and device
A technology of image data and acquisition method, applied in the field of image processing, can solve the problems of difficult ultraviolet fluorescent anti-counterfeiting features, ultraviolet phosphorescent anti-counterfeiting features, etc.
Active Publication Date: 2018-05-11
WEIHAI XINBEIYANG RONGXIN SCI & TECH +1
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[0007] In view of this, the purpose of the present invention is to provide an image data acquisition method and device to solve the problem that it is difficult to extract both ultraviolet fluorescent anti-counterfeiting features and to the problem of UV phosphorescent security features
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[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. 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...
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The invention provides an image data obtaining method and device. The method comprises that when an Mth collection signal is sent to an image sensor, a light source is switched on; the light source isswitched off when the light source emits light for a first time length, and the first time length is greater than pulse width of the collection signals and lower than a signal collection period; image data of a medium corresponding to the period the Mth collection signal is obtained and serves as first medium image data; the light source is switched on when an (M+N)th collection signal is sent tothe image sensor; the light source is switched off when the light source emits light for a second time length, the second time length is greater than the first time length and lower than or equivalent to the signal collection period; and image data of a medium corresponding to a period of an (M+N+1)th collection data is obtained and serves as second medium image data. The problem that it is hardto extract UV fluorescent anti-counterfeiting characteristic and UV phosphorescent anti-counterfeiting characteristic from a bill UV image simultaneously in related art can be solved.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to an image data acquisition method and device. Background technique [0002] Notes of value (hereinafter referred to as notes) include a variety of anti-counterfeiting features for preventing criminals from forging. Usually, various anti-counterfeiting features included in the bill are formed by printing with different anti-counterfeiting inks, and each anti-counterfeiting feature needs to be irradiated with light of a corresponding wavelength to develop a color. The prior art discloses a bill containing ultraviolet fluorescent anti-counterfeiting features and ultraviolet phosphorescent anti-counterfeiting features. The ultraviolet fluorescent anti-counterfeiting features and ultraviolet phosphorescent anti-counterfeiting features need to be irradiated with ultraviolet light to develop color. When counterfeiting, it is necessary to use an ultraviolet light source ...
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Login to View More IPC IPC(8): G07D7/121G07D7/20
CPCG07D7/121G07D7/2016G07D7/20
Inventor 于转龙焦朋刘茂林王春涛
Owner WEIHAI XINBEIYANG RONGXIN SCI & TECH