CN110365861B - Fluorescent ink image reading method and device, storage medium and processor - Google Patents

Fluorescent ink image reading method and device, storage medium and processor Download PDF

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Publication number
CN110365861B
CN110365861B CN201910511706.7A CN201910511706A CN110365861B CN 110365861 B CN110365861 B CN 110365861B CN 201910511706 A CN201910511706 A CN 201910511706A CN 110365861 B CN110365861 B CN 110365861B
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fluorescent ink
ink image
photosensitive
read
resolution
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CN110365861A (en
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邓娟
巩志
王家墨
邱肖
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Weihai Hualing Opto Electronics Co Ltd
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Weihai Hualing Opto Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
    • H04N1/00236—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer
    • H04N1/00241—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer using an image reading device as a local input to a computer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00795—Reading arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Facsimile Heads (AREA)

Abstract

The invention discloses a method and a device for reading a fluorescent ink image, a storage medium and a processor. Wherein, the method comprises the following steps: acquiring a control signal; determining a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of said resolution combinations comprising: a main scanning resolution and a swath scanning resolution; reading the fluorescent ink image using the target resolution combination. The invention solves the technical problem of uncontrollable resolution ratio in reading fluorescent ink color images.

Description

Fluorescent ink image reading method and device, storage medium and processor
Technical Field
The invention relates to the field of scanning, in particular to a method and a device for reading a fluorescent ink image, a storage medium and a processor.
Background
Fluorescent ink is one of the more used inks in ticket printing, and the main component of the fluorescent ink is fluorescent pigment. The fluorescent pigment belongs to a functional luminescent pigment, and is different from a common pigment in that when external light (including ultraviolet light) is irradiated, energy in a certain form can be absorbed, photons are excited, and the absorbed energy is released in a low visible light form, so that a fluorescent phenomenon with different hues is generated. The different colors of light combine to form an extraordinary bright color, and when the external light (including ultraviolet light) stops irradiating, the light-emitting phenomenon disappears. Fluorescent inks are used in a variety of fields, such as securities, stamps, trademarks, labels, scratchcards, invoices, navigation marks and other packaging decoration prints.
Among various fluorescent inks, the ultraviolet-excited fluorescent anti-counterfeiting ink is generally used for anti-counterfeiting mark printing of paper money, checks and other bank valuable bills and is used as an anti-counterfeiting means. The financial machine is used as an important financial device for verifying the authenticity of paper money, checks and other bank valuable papers, and the reading and the identification of the fluorescent ink image become an important technical index of the counterfeit identification performance of the financial machine. At present, compared with a common fluorescent ink identification device, only a black-and-white image of fluorescent ink can be read, and only the existence, shape and position characteristics of the fluorescent ink can be judged, but actually, the fluorescent ink is colored, so that the function of the fluorescent ink identification device limits the exertion of the anti-counterfeiting function of the fluorescent ink.
In recent years, devices capable of reading fluorescent ink color images have been developed, and color images are obtained by mounting RGB color filters on the surface of a light receiving element and arranging them in sequence along the main scanning direction, but this method reduces the resolution of the image, and the reading resolution is fixed, and thus it is not satisfactory for applications where high resolution and various resolutions are controllable.
In view of the above-mentioned problem of uncontrollable resolution for reading fluorescent ink color images, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for reading a fluorescent ink image, a storage medium and a processor, which are used for at least solving the technical problem that the resolution for reading a fluorescent ink color image is uncontrollable.
According to an aspect of an embodiment of the present invention, there is provided a method of reading a fluorescent ink image, including: acquiring a control signal; determining a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of said resolution combinations comprising: a main scanning resolution and a swath scanning resolution; reading the fluorescent ink image using the target resolution combination.
Further, reading the fluorescent ink image with the target resolution combination includes: determining an optical signal read by at least one photosensitive window in the amplitude scanning direction in a photoelectric conversion chip as a pixel signal according to the amplitude scanning resolution in the target resolution combination, wherein the photoelectric conversion chip is used for converting the optical signal into the pixel signal, and each pixel signal corresponds to a read pixel point; determining the sequence of reading the optical signals by a plurality of photosensitive windows in each line scanning period and the scanning length of the fluorescent ink image in the main scanning direction in each line scanning period according to the main scanning resolution in the target resolution combination, wherein the photosensitive windows are arranged in the moving direction of the fluorescent ink image on the photoelectric conversion chip, and the reading of the optical signals is completed once by each photosensitive window in each line scanning period; and determining the reading result of the fluorescent ink image according to the pixel signals read in a plurality of line scanning periods.
Further, the fluorescent ink image excites the optical signal of at least one color under the irradiation of ultraviolet rays, the photoelectric conversion chip is provided with the photosensitive window of at least one color, wherein the photosensitive windows of different colors are used for collecting the optical signal of different colors.
Further, the light signal of at least one color comprises: red, green and blue light signals; the photosensitive window of at least one color comprises: a red light sensing window, a green light sensing window and a blue light sensing window; the pixel signal includes: red pixel signals, green pixel signals, and blue pixel signals; the photoelectric conversion chip includes: the red light sensing window row is provided with a plurality of red light sensing windows in an arrayed mode, the green light sensing window row is provided with a plurality of green light sensing windows in an arrayed mode, and the blue light sensing window row is provided with a plurality of blue light sensing windows in an arrayed mode; the photoelectric conversion chip is used for converting the red light signal read by the red light sensing window into the red pixel signal; converting the green light signals read by the green light sensing window into green pixel signals; converting the blue light signal read by the blue light sensing window into the blue pixel signal; each read pixel point is determined according to a red pixel signal, a green pixel signal and a blue pixel signal.
Further, determining, as one pixel signal, an optical signal read from at least one photosensitive window in the photoelectric conversion chip in the width scanning direction includes: determining the optical signal read by each photosensitive window as a pixel signal; or determining the optical signals read by a plurality of adjacent photosensitive windows as a pixel signal.
Further, determining an order in which the plurality of rows of light sensing windows read the light signals in each row scanning period comprises: determining a plurality of rows of the photosensitive windows to read the optical signals simultaneously in each row scanning period; determining a scan length of the fluorescent ink image in a main scan direction for each line scan period includes: after each line scanning period is finished, determining that the fluorescent ink image moves once according to a preset length in the main scanning direction; determining the scan length to be the predetermined length.
Further, the photosensitive windows in multiple rows sequentially are: a first photosensitive window row, a second photosensitive window row and a third photosensitive window row; determining an order in which the plurality of rows of light sensing windows read the light signals in each row scanning period comprises: at the beginning of each line scanning period, controlling the photosensitive windows in the first photosensitive window line and the third photosensitive window line to read the optical signals simultaneously according to a first trigger signal; controlling the photosensitive windows in the second photosensitive window row to read the optical signals according to a second trigger signal at the middle point of each row scanning period; determining a scan length of the fluorescent ink image in a main scan direction in each of the line scan periods comprises: determining that the fluorescent ink image moves once according to a preset length in the main scanning direction at the middle point of each line scanning period; and after each line scanning period is finished, determining that the fluorescent ink image moves once according to the preset length in the main scanning direction, and determining that the scanning length is the sum of the preset lengths of the two movements.
According to another aspect of the embodiments of the present invention, there is also provided a fluorescent ink image reading apparatus including: an acquisition unit for acquiring a control signal; a determining unit configured to determine a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of said resolution combinations comprising: a main scanning resolution and a swath scanning resolution; and the reading unit is used for reading the fluorescent ink image by utilizing the target resolution combination.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program runs, the apparatus on which the storage medium is located is controlled to execute the above method for reading fluorescent ink image.
According to a further aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program executes the method for reading a fluorescent ink image.
In an embodiment of the present invention, before reading the fluorescent ink image, a predetermined resolution set may be preset, and at least one group of resolution combinations is set in the predetermined resolution set, and each group of resolution combinations includes: the main scanning resolution and the web scanning resolution can determine a target resolution combination corresponding to a control signal from a preset resolution set according to the control signal in the process of reading the fluorescent ink image, and the fluorescent ink image is read by utilizing the target sub-resolution combination, so that the technical effect of adjusting the resolution for reading the fluorescent ink image is realized, and the technical problem that the resolution for reading the fluorescent ink color image is uncontrollable is solved. .
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of reading a fluorescent ink image according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a fluorescent ink image reading apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a photoelectric conversion chip according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an internal structure of a photoelectric conversion chip according to an embodiment of the present invention;
FIG. 5 is a schematic view of a fluorescent ink image reading apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of a fluorescent ink image reading process according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of a 600dpi by 600dpi fluorescent ink image reading process according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of read data transfer timing for a 600dpi by 600dpi fluorescent ink image in accordance with an embodiment of the present invention;
FIG. 9 is a schematic illustration of a 300dpi by 300dpi fluorescent ink image reading process according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of read data transmission timing for a 300dpi by 300dpi fluorescent ink image in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of a fluorescent ink image reading apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for reading a fluorescent ink image, where the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer executable instructions, and where a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that illustrated herein.
Fig. 1 is a flowchart of a method for reading a fluorescent ink image according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, acquiring a control signal;
step S104, determining a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of resolution combinations comprising: a main scanning resolution and a swath scanning resolution;
step S106, reading the fluorescent ink image by using the target resolution combination.
In an embodiment of the present invention, before reading the fluorescent ink image, a predetermined resolution set may be preset, and at least one group of resolution combinations is set in the predetermined resolution set, and each group of resolution combinations includes: the main scanning resolution and the web scanning resolution can determine a target resolution combination corresponding to a control signal from a preset resolution set according to the control signal in the process of reading the fluorescent ink image, and the fluorescent ink image is read by utilizing the target sub-resolution combination, so that the technical effect of adjusting the resolution for reading the fluorescent ink image is realized, and the technical problem that the resolution for reading the fluorescent ink color image is uncontrollable is solved.
The fluorescent ink image may be securities, stamps, trademarks, labels, scratchcards, invoices, navigation marks, or the like, and the electronic image of the fluorescent ink image can be acquired by reading the fluorescent ink image on a printed matter for packaging decoration using the fluorescent ink.
In step S102, the control signal may be an instruction input by the user to select the target resolution combination.
For example, at least one set of resolution combinations in the predetermined resolution may be presented through a resolution selection menu, and then a user may select a target resolution combination in the resolution selection menu, thereby triggering a control signal, and determining the target resolution combination for reading the fluorescent ink image according to the control signal.
For another example, the user may directly input a specific resolution combination for reading the fluorescent ink image, generate a control signal, and then select a target resolution combination corresponding to the specific resolution combination from a predetermined resolution set according to the control signal.
In the method for reading a fluorescent ink image, the fluorescent ink image reading device may be controlled to read and control the fluorescent ink image.
Fig. 2 is a schematic diagram of a fluorescent ink image reading apparatus according to an embodiment of the present invention, as shown in fig. 2, including: a light source 202 (containing at least UV light), a lens 204, a photoelectric conversion chip 206, a circuit board 208, a frame 210 and a transparent cover plate 212.
The light source 202 can emit at least UV light to irradiate an object to be read, i.e. an original, and excite fluorescent ink printed on the original to generate excitation light; a lens 204 for condensing the excitation light and guiding the excitation light to the photoelectric conversion chip; a photoelectric conversion chip 206 for receiving the excitation light converged by the lens and performing photoelectric conversion; a circuit board 208 on which the photoelectric conversion chip and its peripheral circuits are mounted; a frame 210 for supporting and protecting; a transparent cover 212 for protecting the internal structure and sealing.
Fig. 3 is a schematic diagram of a photoelectric conversion chip according to an embodiment of the present invention, and as shown in fig. 3, three rows of photosensitive windows on the surface of the photoelectric conversion chip are covered with blue, green, and red filter films, i.e., a blue photosensitive window B, a green photosensitive window G, and a red photosensitive window R.
All the photosensitive windows can transmit infrared light, and the reading device for the fluorescent ink image can read not only a color image but also an infrared light image.
The light source emits light including UV light (i.e., light including ultraviolet rays) under the control of the external control circuit, and irradiates the surface of the original document through a predetermined optical path, whereby the fluorescent ink printed on the original document emits fluorescence upon the irradiation of the UV light. The excited fluorescence is guided to the surface of the photoelectric conversion chip by the converging action of the lens. The surface of the photoelectric conversion chip is provided with three rows of photosensitive windows, and the surfaces of the three rows of photosensitive windows are respectively covered with filtering films with blue, green and red colors, so that the blue, green and red colors can correspondingly transmit. After the excited fluorescence passes through the three rows of photosensitive windows, the excited fluorescence is converted into an electric signal in the photoelectric conversion chip, the electric signal is output, and a color image of the excited fluorescence is synthesized through image processing.
Optionally, after each row of the photosensitive windows receives light irradiation, the photoelectrically converted electrical signals are output in a serial manner, and the photoelectrically converted electrical signals of the three rows of the photosensitive windows are output in a parallel manner. This output facilitates subsequent image synthesis and processing.
Fig. 4 is a schematic diagram of an internal structure of a photoelectric conversion chip according to an embodiment of the present invention, and as shown in fig. 4, the photoelectric conversion chip includes: sensitization window, shift register, CMOS logic circuit and output circuit, wherein, the sensitization window includes: a blue light sensitive window (i.e., a B color light sensitive window), a green light sensitive window G (i.e., a G color light sensitive window), and a red light sensitive window R (i.e., an R color light sensitive window).
Under the drive of externally input control signals and other signals, the photoelectric conversion chip enters a working state, the light energy collection and the electric signal conversion are carried out on the photosensitive window, the amplitude of the electric signal is in direct proportion to the light energy received by the photosensitive window, and the electric signal is transmitted to the shift register and is output outwards through the signal output circuit.
Fig. 5 is a schematic diagram of a fluorescent ink image reading apparatus according to an embodiment of the present invention, and as shown in fig. 5, when a document (i.e., a fluorescent ink image) 502 passes through the fluorescent ink image reading apparatus along the X direction according to a predetermined trajectory and speed, the document passes over photosensitive windows covering B, G, R three color filter films (i.e., passes over a blue photosensitive window 504, a green photosensitive window 506, and a red photosensitive window 508).
Optionally, the original 502 and the light-sensitive windows (i.e., blue light-sensitive window 504, green light-sensitive window 506, and red light-sensitive window 508) sandwich the lens 204 therebetween.
Fig. 6 is a schematic diagram of a reading process of a fluorescent ink image according to an embodiment of the present invention, and as shown in fig. 6, a reading position 510 on a document (i.e., fluorescent ink image) 502 is a line composed of a row of pixel points parallel to the arrangement direction of photoelectric conversion windows on a photoelectric conversion chip 206.
Alternatively, when the read position 510 on the original (i.e., fluorescent ink image) passes over the blue-sensitive viewing window 504 first, under the irradiation of UV light, the fluorescent ink printed at the reading position 510 on the original (i.e., fluorescent ink image) is excited to a color visible light image, the blue light in the excitation image will pass through the lens 204 and impinge on the blue sensitive window 504, because the blue light-sensitive window 504 is covered with the blue filtering film, blue light can be transmitted, and the surfaces of the green light-sensitive window 506 and the red light-sensitive window 508 are respectively covered with the green filtering film and the red filtering film, blue light cannot be transmitted, the blue-sensitive window 504 collects the energy of the blue light, i.e. the blue light signal, and converts it into an electrical signal, forming a blue light signal of the excitation light image of the reading position 510 on the original, at this time, the green light sensing window 506 and the red light sensing window 508 do not receive the blue light signal in the fluorescence excitation at the position; the original 502 then continues to move forward in the X direction.
Alternatively, when the reading position 510 on the original moves above the green photosensitive window 506, under the irradiation of UV light, the fluorescent ink printed at the position of the original 502 is excited to generate a color visible light image, green light in the excited image is irradiated onto the green photosensitive window 506 through the lens 204, the green light can be transmitted due to the green filter film covered on the surface of the green photosensitive window 506, and the green light can not be transmitted due to the blue and red filter films covered on the surfaces of the blue photosensitive window 504 and the red photosensitive window 508, respectively, so that the green photosensitive window 506 collects the energy of the green light and converts the energy into an electric signal, which forms a green light signal of the excitation light image of the reading position 510 on the original.
Similarly, the photoelectric conversion chip forms a red light signal of the excitation light image at the reading position 510 on the original 502. After all the originals pass over the fluorescence reading device, in the case that the width of the original is smaller than the width of the scanning width of the fluorescence ink reading apparatus of the embodiment, the fluorescence ink reading device of the embodiment collects the light signals of blue, green and red for exciting fluorescence of all the pixel points on the original 502, and the color image of each pixel point can be synthesized through image processing, so as to synthesize the color fluorescence excited image of the original 502.
As an alternative embodiment, reading the fluorescent ink image with the target resolution combination includes: determining an optical signal read by at least one photosensitive window in the amplitude scanning direction in a photoelectric conversion chip as a pixel signal according to the amplitude scanning resolution in the target resolution combination, wherein the photoelectric conversion chip is used for converting the optical signal into the pixel signal, and each pixel signal corresponds to a read pixel point; determining the sequence of reading optical signals by a plurality of rows of photosensitive windows in each row scanning period and the scanning length of a fluorescent ink image in the main scanning direction in each row scanning period according to the main scanning resolution in the target resolution combination, wherein the plurality of rows of photosensitive windows are arranged on the photoelectric conversion chip along the moving direction of the fluorescent ink image, and each photosensitive window finishes one-time reading of the optical signals in each row scanning period; and determining the reading result of the fluorescent ink image according to the pixel signals read in a plurality of line scanning periods.
Optionally, at least one photosensitive window is arranged in the photoelectric conversion chip in the scanning direction, the photosensitive window can read an optical signal of the fluorescent ink image, and the photoelectric conversion chip converts the optical signal collected by the photosensitive window into an electrical signal, so as to generate a pixel signal.
Optionally, in the process of reading the fluorescent ink image by using the target resolution combination, it is determined that the optical signal acquired by the at least one photosensitive window may generate one pixel signal according to the amplitude scanning resolution in the target resolution combination, so as to adjust the number of the pixel signals read in the amplitude scanning direction, thereby implementing adjustment of the amplitude scanning resolution.
Optionally, a plurality of rows of photosensitive windows are arranged on the photoelectric conversion chip along the moving direction of the fluorescent ink image, the sequence of reading the optical signals by the photosensitive windows in each row can be controlled respectively, and in each row scanning period, the photosensitive windows on the photoelectric conversion chip complete one-time reading of the optical signals.
Optionally, the scanning length of the fluorescent ink image in the main scanning direction may be controlled in each line scanning period, and the number of pixel signals obtained by the fluorescent ink image read by the photosensitive window may be adjusted in the main scanning direction according to the scanning length of the fluorescent ink image in the main scanning direction in combination with the sequence in which the plurality of lines of photosensitive windows read the optical signals, so as to implement adjustment of the main scanning resolution.
As an alternative example, each row of photosensitive windows is used for reading a row of pixel points on the fluorescent ink image, and the multiple rows of photosensitive windows correspond to multiple rows of pixel points on the fluorescent ink image one to one, so that the multiple rows of photosensitive windows can be controlled to collect optical signals corresponding to the multiple rows of pixel points on the fluorescent ink image at the same time.
As another optional example, each row of photosensitive windows is used to read multiple rows of pixel points on the fluorescent ink image, and if each row of photosensitive windows is used to read two rows of pixel points on the fluorescent ink image, the photosensitive windows in odd rows may be controlled to read optical signals of the multiple rows of pixel points of the fluorescent ink image, then the fluorescent ink image may be moved, and then the photosensitive windows in even rows may be controlled to read optical signals of the multiple rows of pixel points of the fluorescent ink image after moving, so that the pixel points read by the photosensitive windows in even rows and the pixel points read by the photosensitive windows in odd rows are the same.
As an alternative embodiment, the fluorescent ink image excites at least one color of light signal under the irradiation of ultraviolet rays, and the photoelectric conversion chip is provided with at least one color of photosensitive windows, wherein the photosensitive windows of different colors are used for collecting the light signals of different colors.
The fluorescent ink image can be excited to emit light of one or more colors by irradiation of ultraviolet rays, wherein the light excited by the fluorescent ink can be expressed by different color modes.
The color mode is a model for expressing a certain color as a digital mode, or a mode for recording a color, and includes: RGB mode, CMKY mode, and two-tone mode.
Alternatively, the RGB scheme refers to a color that represents a plurality of colors by using a combination of three colors of red (R), green (G), and blue (B).
Alternatively, the RGB scheme represents colors that represent a plurality of colors by using a combination of four colors, Cyan (Cyan), Magenta (Magenta), yellow (Yel low), and Black (Black).
Alternatively, the two-tone mode, which refers to combining color images by blending their gradations with two-tone, three-tone, and four-tone colors, is created using 2-4 colors.
In the above embodiment of the present invention, the fluorescent ink image can be excited to generate colored light under the irradiation of ultraviolet rays, i.e., to generate an optical signal, and the optical signal excited by the fluorescent ink image can be collected through the photosensitive window. Since the color of the fluorescent ink image can be recorded in different manners, for example, using an RGB mode or a CMKY mode, different colors of the light signals emitted by the fluorescent ink image can be read by selecting corresponding light sensing windows according to different color recording manners.
For example, the color of the fluorescent ink image is recorded using the RGB scheme, and the color of the ink image can be expressed using red, green, and blue, and thus, the optical signal excited by the fluorescent ink image can be divided into: a red light signal (R), a green light signal (G), and a blue light signal (B), and then reading the red light signal through a red light sensing window; reading green light signals through a green photosensitive window; the blue light signal is read through the blue sensitive window.
As an alternative embodiment, the light signal of at least one color comprises: red, green and blue light signals; the photosensitive window of at least one color includes: a red light sensing window, a green light sensing window and a blue light sensing window; the pixel signal includes: red pixel signals, green pixel signals, and blue pixel signals; the photoelectric conversion chip includes: the device comprises a red light sensing window row in which a plurality of red light sensing windows are arranged, a green light sensing window row in which a plurality of green light sensing windows are arranged, and a blue light sensing window row in which a plurality of blue light sensing windows are arranged; the photoelectric conversion chip is used for converting red light signals read by the red photosensitive window into red pixel signals; converting green light signals read by the green photosensitive window into green pixel signals; converting the blue light signal read by the blue light sensing window into a blue pixel signal; each read pixel point is determined according to a red pixel signal, a green pixel signal and a blue pixel signal.
In the above embodiment of the present invention, since red, green, and blue can form a color image, in the process of reading the fluorescent ink image, by reading the blue component, the green component, and the red component of each pixel point in the fluorescent ink image, the color of the pixel point can be restored according to the read blue component, green component, and red component, and further, a color electronic image of the fluorescent ink image can be read.
Optionally, the photosensitive windows of the same color are arranged in the same row of the photoelectric conversion chip.
As an alternative embodiment, the determining, as one pixel signal, an optical signal read from at least one photosensitive window in the width scanning direction in the photoelectric conversion chip includes: determining the optical signal read by each photosensitive window as a pixel signal; or determining the optical signals read by a plurality of adjacent photosensitive windows as a pixel signal.
In the above embodiment of the present invention, if the frame scanning resolution is higher, more pixel signals need to be collected in the frame scanning direction, so that fewer optical signals read by the photosensitive windows can be used as one pixel signal, for example, the optical signal read by each photosensitive window can be used as one pixel signal; if the amplitude scanning resolution is low, fewer pixel signals need to be acquired in the amplitude scanning direction, so that more light signals read by the photosensitive windows are used as one pixel signal, for example, the light signals read by two adjacent photosensitive windows can be used as one pixel signal; or using the optical signals read by a plurality of adjacent photosensitive windows as a pixel signal.
As an alternative embodiment, determining the order in which the plurality of rows of photosensitive windows read the optical signals in each row scanning period includes: determining a plurality of photosensitive windows to read optical signals simultaneously in each line scanning period; determining a scan length of the fluorescent ink image in the main scan direction for each line scan period includes: after each line scanning period is finished, determining that the fluorescent ink image moves once according to a preset length in the main scanning direction; the scan length is determined to be a predetermined length.
As an alternative embodiment, the multiple rows of photosensitive windows sequentially include: a first photosensitive window row, a second photosensitive window row and a third photosensitive window row; determining the sequence of the light signals read by the plurality of rows of light sensing windows in each row scanning period comprises: at the beginning of each line scanning period, controlling the photosensitive windows in the first photosensitive window line and the third photosensitive window line to read optical signals simultaneously according to a first trigger signal; controlling the photosensitive windows in the second photosensitive window row to read optical signals according to the second trigger signal at the middle point of each row scanning period; determining a scan length of the fluorescent ink image in the main scan direction for each line scan period includes: determining that the fluorescent ink image moves once according to a preset length in the main scanning direction at the middle point of each line scanning period; after each line scanning period is finished, the fluorescent ink image is determined to move once according to the preset length in the main scanning direction, and the scanning length is determined to be the sum of the preset lengths of the two movements.
For ease of understanding, the following is exemplified:
the fluorescent ink image sequentially comprises: the method comprises the following steps of A row of pixel points, B row of pixel points, C row of pixel points and D row of pixel points; the multirow sensitization window includes in proper order: the line A light sensing window, the line B light sensing window and the line C light sensing window.
For example, if each row of photosensitive windows is used for reading a row of pixel points, the row a photosensitive windows can be used for reading the row a pixel points to obtain an a1 th optical signal, and then an a1 th pixel signal is generated; b rows of pixel points are read by using the B rows of photosensitive windows to obtain a B1 th optical signal, and then a B1 th pixel signal is generated; and reading the C rows of pixel points by using the C rows of photosensitive windows to obtain a C1 light signal, and further generating a C1 pixel signal.
Then, the fluorescent ink image is controlled to move in the main scanning direction, and B rows of pixel points can be read by using the line A photosensitive window to obtain a B2 light signal, so that a B2 pixel signal is generated; reading the C rows of pixel points by using the B rows of photosensitive windows to obtain a C2 th optical signal, and further generating a C2 th pixel signal; and reading the D rows of pixel points by using the C rows of photosensitive windows to obtain a D2 light signal, and further generating a D2 pixel signal.
Similarly, the fluorescent ink image is controlled to move in the main scanning direction, and the row A photosensitive window can be used for reading the row C pixel points to obtain a row C3 optical signal, so that a row C3 pixel signal is generated; and reading the D rows of pixel points by using the B rows of photosensitive windows to obtain a D3 light signal, and further generating a D3 pixel signal.
Because the C1 th pixel signal, the C2 th pixel signal and the C3 th pixel signal are the reading results of the row C pixel points by the row a photosensitive window, the row B photosensitive window and the row C photosensitive window, the read pixel points corresponding to the row C pixel points can be generated according to the C1 th pixel signal, the row C2 th pixel signal and the row C3 th pixel signal, and then the electronic image read by the fluorescent ink image can be obtained according to the read pixel points.
For another example, if each row of photosensitive windows is used for reading two rows of pixel points, the row a photosensitive windows can be used for reading the row a pixel points and the row B pixel points to generate AB1 optical signals, and further generate AB1 pixel signals; b-row photosensitive windows are used for reading B-row pixel points and C-row pixel points to obtain a BC1 optical signal, and a BC1 pixel signal is generated; and reading the C-row pixel points and the D-row pixel points by using the C-row photosensitive window to obtain a CD1 optical signal, and further generating a CD1 pixel signal.
Then, the fluorescent ink image is controlled to move in the main scanning direction, the row A photosensitive window can be used for reading the row B pixel points and the row C pixel points to generate BC2 optical signals, and a BC2 pixel signal is further generated; and reading the C-row pixel points and the D-row pixel points by using the B-row photosensitive window to obtain a CD2 optical signal, and further generating a CD2 pixel signal.
And similarly, controlling the fluorescent ink image to move in the main scanning direction, and reading the C-row pixel points and the D-row pixel points by using the A-row photosensitive window to obtain a CD3 light signal so as to generate a CD3 pixel signal.
Because the CD1 th pixel signal, the CD2 th pixel signal and the CD3 th pixel signal are the reading results of the A-line photosensitive window, the B-line photosensitive window and the C-line photosensitive window to the C-line pixel points and the D-line pixel points, the read pixel points corresponding to the C-line pixel points and the D-line pixel points can be generated according to the CD1 th pixel signal, the CD2 th pixel signal and the CD3 th pixel signal, and then the electronic image read by the fluorescent ink image can be obtained according to the read pixel points.
It should be noted that only the pixel signals read from the pixels in the same row can be synthesized into the read pixel.
In addition, as described above, the BC1 th pixel signal and the BC2 th pixel signal also include the read result of the C-line pixel, and the read result overlaps with the scan result of the CD1 th pixel signal, the CD2 th pixel signal, and the CD3 th pixel signal, so that the read order of the a-line exposure window, the B-line exposure window, and the C-line exposure window can be controlled separately, and the repeated read can be avoided.
For example, if each row of photosensitive windows is used for reading two rows of pixel points, the row a photosensitive windows can be used for reading the row a pixel points and the row B pixel points to generate AB1 optical signals, and further generate AB1 pixel signals; and reading the C-row pixel points and the D-row pixel points by using the C-row photosensitive window to obtain a CD1 optical signal, and further generating a CD1 pixel signal.
Then, the fluorescent ink image is controlled to move in the main scanning direction, the C-row pixel points and the D-row pixel points are read by using the B-row photosensitive window, a CD2 light signal is obtained, and a CD2 pixel signal is generated.
Similarly, the fluorescent ink image is controlled to move in the main scanning direction, the line A photosensitive window is used for reading the row C pixel points and the row D pixel points to obtain a CD3 optical signal, and a CD3 pixel signal is generated; and reading the pixel points in the corresponding row by using the C-row photosensitive window.
That is, the reading order of the photosensitive windows in the odd-numbered rows and the photosensitive windows in the even-numbered rows may be controlled separately.
In the above embodiments of the present invention, the manner of reading the pixel signal in each line scanning period can be determined according to the line scanning resolution (i.e., the main scanning resolution) and the web scanning resolution in the target resolution combination, and according to the pixel signals read in a plurality of line scanning periods, the electronic image of the fluorescent ink image can be synthesized using the pixel signals obtained in a plurality of line scanning periods, so as to obtain the reading result of the fluorescent ink image.
The present invention also provides a preferred embodiment, which provides a color fluorescence image reading method.
According to the technical scheme provided by the invention, when reading equipment of the fluorescent ink image receives different resolution control pulse signals, the fluorescent ink image can correspondingly work in different states of line scanning resolution (namely main scanning resolution) and width scanning resolution. By adjusting the speed of the motor for externally conveying the original, the speed of the original passing over the fluorescent ink reading device is matched with the requirement of scanning resolution, and meanwhile, the light emitting period and time of the light source are adjusted, so that an image consistent with the preset main scanning resolution and the preset width scanning resolution can be obtained.
It should be noted that, in the process of reading the fluorescent ink image by the reading device using the fluorescent ink image, the paper money, the valuable bill and other originals printed with fluorescent ink (i.e. fluorescent ink images) pass through the upper part of the fluorescent ink reading equipment according to a preset channel, when a position 1 on the original document just passes above a light sensing window covered by the blue filter membrane (namely a blue light sensing window), under the irradiation of the UV light source, the fluorescent ink is excited to emit exciting light, and when the exciting light irradiates the surface of the photoelectric conversion chip through the lens, the light with the excitation light wavelength in the blue light wave band penetrates through a light sensing window (namely a blue light sensing window) covered with a blue filter membrane, is absorbed and converted into an electric signal, i.e. the image at position 1 is read by the overlying blue filter film light-sensitive window, i.e. the blue light-sensitive window, and recorded as a B-image at this position 1.
When the read position 1 moves to a position corresponding to a green filter film covered photosensitive window (i.e., a green photosensitive window) adjacent to a blue filter film covered photosensitive window (i.e., a blue photosensitive window) along with the movement of the original, the UV light source irradiates the original, the fluorescent ink is excited, and excitation light is emitted, and when the excitation light irradiates the surface of the photoelectric conversion chip through the lens, light with the wavelength of the excitation light in a green wavelength band penetrates through the green filter film covered photosensitive window (i.e., the green photosensitive window), is absorbed and converted into an electric signal, that is, an image of the read position 1 is read by the green filter film covered photosensitive window (i.e., the green photosensitive window), and is recorded as a G image of the position 1.
When the read position 1 moves to a position corresponding to a red filter film covered photosensitive window (i.e., a red photosensitive window) adjacent to a green filter film covered photosensitive window (i.e., a green photosensitive window) along with the movement of the original, the UV light source irradiates the original, the fluorescent ink is excited, and excitation light is emitted, and when the excitation light irradiates the surface of the photoelectric conversion chip through the lens, light with the wavelength of the excitation light in the red light band penetrates through the red filter film covered photosensitive window (i.e., the red photosensitive window), is absorbed and converted into an electric signal, i.e., an image of the read position 1 is read by the red filter film covered photosensitive window (i.e., the red photosensitive window), and is recorded as an R image of the position 1.
The B, G, R images at the position 1 are subjected to synthesis processing, so that a color fluorescent ink excitation image at the position 1 can be generated. With the movement of the original, fluorescent ink images at different positions on the original are continuously recorded, and finally, a complete color fluorescent ink image of the original is formed.
The technical scheme provided by the invention can realize high-resolution color fluorescent image reading, and can realize different combinations of main scanning resolution and amplitude scanning resolution by receiving different control signals, and specifically, four combination modes can be provided: 600dpi × 600 dpi; 300dpi × 300 dpi; 300dpi × 600 dpi; 600dpi × 300 dpi.
For ease of understanding, the following is exemplified for 600dpi × 600dpi and 300dpi × 300 dpi:
note that, in the following example, the number of light sensing windows in the web scanning direction of the electric conversion chip is 24/mm, that is, the maximum scanning resolution in the web scanning direction is 600dpi, and the width in the main scanning direction of each light sensing window is 42.3um, that is, the maximum scanning resolution in the main scanning direction is also 600 dpi.
Fig. 7 is a schematic diagram of a reading process of a fluorescent ink image of 600dpi × 600dpi according to an embodiment of the present invention, and as shown in fig. 7, three pixel components of blue, green, and red are generated during a relative movement of one pixel point on an original (i.e., fluorescent ink image) and a fluorescent image reading apparatus, and are recorded in Line1, Line2, and Line3 data, respectively.
Fig. 8 is a schematic diagram of a read data transmission timing sequence of a 600dpi × 600dpi fluorescent ink image according to an embodiment of the present invention, as shown in fig. 8, where SI is a line trigger signal, an SI high-level pulse triggers a photoelectric conversion chip to perform a line of graphic data acquisition, and after the photoelectric conversion chip finishes acquiring image data of a previous line of an original document (i.e., a fluorescent ink image), the original document (i.e., the fluorescent ink image) moves forward under the driving of an external motor, and a step size of the movement is 42.3um, and at this time, a next SI high-level pulse triggers the photoelectric conversion chip to perform a next line of image data acquisition. The period between every two SI pulse signals is called a line scanning period, in each line scanning period, the photoelectric conversion chip collects three image data components of OS _ B, OS _ G, OS _ R, and the shift register in the photoelectric conversion chip is used for enabling the three image data components of OS _ B, OS _ G, OS _ R output in each line scanning period to be the data collected in the previous line scanning period. According to the relationship between the position movement of the original (i.e., fluorescent ink image) and the different color data of the image position collected by the photoelectric conversion chip, SO _ B _ Line1-data, SO _ G _ Line2-data, and OS _ R _ Line3-data, three lines of data can synthesize a color fluorescent image of one Line on the original (i.e., fluorescent ink image), and further can synthesize all the color fluorescent images of the original (i.e., fluorescent ink image).
Fig. 9 is a schematic diagram of a reading process of a 300dpi × 300dpi fluorescent ink image according to an embodiment of the present invention, and as shown in fig. 9, the difference from the 600dpi × 600dpi mode is that each pixel consists of a 2 × 2 pixel matrix, and one basic pixel unit is one pixel in the 600dpi × 600dpi mode, so that the scanning resolution in both the main scanning direction and the width scanning direction in this operating mode is 300 dpi.
Fig. 10 is a schematic diagram of a read data transmission timing sequence of a 300dpi × 300dpi fluorescent ink image according to an embodiment of the present invention, as shown in fig. 10, which is different from a 600dpi × 600dpi mode in two aspects, in the first aspect, each pixel consists of four pixels in an original mode, in the second aspect, at a middle point of every two SI line periods, there is a half-period trigger signal SI-H, in each line scanning period, a light source will be lit twice in sequence with an SI-H pulse signal as a boundary, and the same read position on an original 300 will be moved twice by 42.3um under the driving of an external motor, in each line scanning period, a photoelectric conversion chip collects three image data components OS _ B, OS _ G, OS _ R, as shown in fig. 11, according to the relationship between the original position movement and the collection of different color data of the image position by the photoelectric conversion chip, SO _ B _ Line1-data, SO _ G _ Line1.5-data, OS _ R _ Line2-data, and three lines of data can synthesize color fluorescent images of one Line on a document (i.e., fluorescent ink image), and further can synthesize all the color fluorescent images of the document (i.e., fluorescent ink image). Wherein the data output is delayed one row backward due to the addition of one memory gate to the OS _ G channel.
The technical scheme provided by the invention can also work at 300dpi × 600 dpi; in the scan resolution mode of 600dpi × 300dpi, the above-mentioned 600dpi × 600dpi can be passed; two operation modes of 300dpi × 300dpi are derived, and are not described in detail herein.
The above-described embodiments of the present invention can achieve high-resolution color fluorescent image reading and a combination of different main scanning resolutions and different web scanning resolutions.
According to still another embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program is executed to perform the fluorescent ink image reading method of any one of the above.
According to yet another embodiment of the present invention, there is also provided a processor for executing a program, wherein the program is executed to execute any one of the above-mentioned fluorescent ink image reading methods.
According to an embodiment of the present invention, there is also provided an embodiment of a reading apparatus for a fluorescent ink image, where the reading apparatus for a fluorescent ink image may be used to execute a reading method for a fluorescent ink image in an embodiment of the present invention, and the reading method for a fluorescent ink image in an embodiment of the present invention may be executed in the reading apparatus for a fluorescent ink image.
FIG. 11 is a schematic diagram of an apparatus for reading a fluorescent ink image, according to an embodiment of the present invention, as shown in FIG. 11, the apparatus may include: an acquisition unit 1101 for acquiring a control signal; a determining unit 1103 configured to determine a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of resolution combinations comprising: a main scanning resolution and a swath scanning resolution; a reading unit 1105 for reading the fluorescent ink image with the target resolution combination.
It should be noted that the obtaining unit 1101 in this embodiment may be configured to execute step S102 in this embodiment, the determining unit 1103 in this embodiment may be configured to execute step S104 in this embodiment, and the reading unit 1105 in this embodiment may be configured to execute step S106 in this embodiment. The above units are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to the disclosure of the above embodiments.
In an embodiment of the present invention, before reading the fluorescent ink image, a predetermined resolution set may be preset, and at least one group of resolution combinations is set in the predetermined resolution set, and each group of resolution combinations includes: the main scanning resolution and the web scanning resolution can determine a target resolution combination corresponding to a control signal from a preset resolution set according to the control signal in the process of reading the fluorescent ink image, and the fluorescent ink image is read by utilizing the target sub-resolution combination, so that the technical effect of adjusting the resolution for reading the fluorescent ink image is realized, and the technical problem that the resolution for reading the fluorescent ink color image is uncontrollable is solved.
As an alternative embodiment, the reading unit comprises: the device comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining an optical signal read by at least one photosensitive window in the amplitude scanning direction in a photoelectric conversion chip as a pixel signal according to the amplitude scanning resolution in the target resolution combination, the photoelectric conversion chip is used for converting the optical signal into the pixel signal, and each pixel signal corresponds to a read pixel point; the second determining module is used for determining the sequence of reading optical signals by the multiple rows of photosensitive windows in each row scanning period and the scanning length of the fluorescent ink image in the main scanning direction in each row scanning period according to the main scanning resolution in the target resolution combination, wherein the multiple rows of photosensitive windows are arranged on the photoelectric conversion chip along the moving direction of the fluorescent ink image, and each photosensitive window finishes one-time reading of the optical signals in each row scanning period; and the third determining module is used for determining the reading result of the fluorescent ink image according to the pixel signals read in the plurality of line scanning periods.
As an alternative embodiment, the fluorescent ink image excites at least one color of light signal under the irradiation of ultraviolet rays, and the photoelectric conversion chip is provided with at least one color of photosensitive windows, wherein the photosensitive windows of different colors are used for collecting the light signals of different colors.
As an alternative embodiment, the light signal of at least one color comprises: red, green and blue light signals; the photosensitive window of at least one color includes: a red light sensing window, a green light sensing window and a blue light sensing window; the pixel signal includes: red pixel signals, green pixel signals, and blue pixel signals; the photoelectric conversion chip includes: the device comprises a red light sensing window row in which a plurality of red light sensing windows are arranged, a green light sensing window row in which a plurality of green light sensing windows are arranged, and a blue light sensing window row in which a plurality of blue light sensing windows are arranged; the photoelectric conversion chip is used for converting red light signals read by the red photosensitive window into red pixel signals; converting green light signals read by the green photosensitive window into green pixel signals; converting the blue light signal read by the blue light sensing window into a blue pixel signal; each read pixel point is determined according to a red pixel signal, a green pixel signal and a blue pixel signal.
As an alternative embodiment, the first determining module includes: the fourth determining module is used for determining the optical signal read by each photosensitive window as a pixel signal; or a fifth determining module, configured to determine the optical signals read by the neighboring multiple photosensitive windows as a pixel signal.
As an alternative embodiment, the second determining module includes: a sixth determining module, configured to determine, in each line scanning period, that a plurality of lines of photosensitive windows read optical signals simultaneously; a seventh determining module, configured to determine that the fluorescent ink image moves once in the main scanning direction according to a predetermined length after each line scanning period is finished; the scan length is determined to be a predetermined length.
As an alternative embodiment, the multiple rows of photosensitive windows sequentially include: a first photosensitive window row, a second photosensitive window row and a third photosensitive window row; the second determining module includes: the eighth determining module is used for controlling the photosensitive windows in the first photosensitive window row and the third photosensitive window row to read optical signals simultaneously according to the first trigger signal at the starting point of each line scanning period; controlling the photosensitive windows in the second photosensitive window row to read optical signals according to the second trigger signal at the middle point of each row scanning period; a ninth determining module, configured to determine that the fluorescent ink image moves once in the main scanning direction according to a predetermined length at an intermediate point of each line scanning period; after each line scanning period is finished, the fluorescent ink image is determined to move once according to the preset length in the main scanning direction, and the scanning length is determined to be the sum of the preset lengths of the two movements.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A method of reading a fluorescent ink image, comprising:
acquiring a control signal;
determining a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of said resolution combinations comprising: a main scanning resolution and a sub-scanning resolution;
reading the fluorescent ink image with the target resolution combination;
wherein reading the fluorescent ink image with the target resolution combination comprises:
determining an optical signal read by at least one photosensitive window in the sub-scanning direction in a photoelectric conversion chip as a pixel signal according to the sub-scanning resolution in the target resolution combination, wherein the photoelectric conversion chip is used for converting the optical signal into the pixel signal, and each pixel signal corresponds to a read pixel point;
determining the sequence of reading the optical signals by a plurality of photosensitive windows in each line scanning period and the scanning length of the fluorescent ink image in the main scanning direction in each line scanning period according to the main scanning resolution in the target resolution combination, wherein the photosensitive windows are arranged in the moving direction of the fluorescent ink image on the photoelectric conversion chip, and the reading of the optical signals is completed once by each photosensitive window in each line scanning period;
determining a reading result of the fluorescent ink image according to the pixel signals read in a plurality of line scanning periods;
firstly, controlling the photosensitive windows in odd rows to read optical signals of multiple rows of pixel points of the fluorescent ink image; and then moving the photosensitive windows of the even rows of the fluorescent ink image to control the light signals of the multiple rows of pixel points of the fluorescent ink image after moving, so that the pixel points read by the photosensitive windows of the even rows and the pixel points read by the photosensitive windows of the odd rows are the same.
2. The method according to claim 1, wherein the fluorescent ink image excites the light signal of at least one color under ultraviolet irradiation, and the photo-sensing windows of at least one color are provided on the photoelectric conversion chip, wherein the photo-sensing windows of different colors are used for collecting the light signals of different colors.
3. The method of claim 2,
the light signal of at least one color comprises: red, green and blue light signals;
the photosensitive window of at least one color comprises: a red light sensing window, a green light sensing window and a blue light sensing window;
the pixel signal includes: red pixel signals, green pixel signals, and blue pixel signals;
the photoelectric conversion chip includes: the red light sensing window row is provided with a plurality of red light sensing windows in an arrayed mode, the green light sensing window row is provided with a plurality of green light sensing windows in an arrayed mode, and the blue light sensing window row is provided with a plurality of blue light sensing windows in an arrayed mode;
the photoelectric conversion chip is used for converting the red light signal read by the red light sensing window into the red pixel signal; converting the green light signals read by the green light sensing window into green pixel signals; converting the blue light signal read by the blue light sensing window into the blue pixel signal;
each read pixel point is determined according to a red pixel signal, a green pixel signal and a blue pixel signal.
4. The method according to claim 1, wherein determining, as one pixel signal, a light signal read from at least one light sensing window in a sub-scanning direction in the photoelectric conversion chip comprises:
determining the optical signal read by each photosensitive window as a pixel signal; or
And determining the light signals read by a plurality of adjacent photosensitive windows as a pixel signal.
5. The method of claim 1,
determining an order in which the plurality of rows of light sensing windows read the light signals in each row scanning period comprises: determining a plurality of rows of the photosensitive windows to read the optical signals simultaneously in each row scanning period;
determining a scan length of the fluorescent ink image in a main scan direction for each line scan period includes: after each line scanning period is finished, determining that the fluorescent ink image moves once according to a preset length in the main scanning direction; determining the scan length to be the predetermined length.
6. The method of claim 1, wherein the plurality of rows of photosensitive windows are, in order: a first photosensitive window row, a second photosensitive window row and a third photosensitive window row;
determining an order in which the plurality of rows of light sensing windows read the light signals in each row scanning period comprises: at the beginning of each line scanning period, controlling the photosensitive windows in the first photosensitive window line and the third photosensitive window line to read the optical signals simultaneously according to a first trigger signal; controlling the photosensitive windows in the second photosensitive window row to read the optical signals according to a second trigger signal at the middle point of each row scanning period;
determining a scan length of the fluorescent ink image in a main scan direction in each of the line scan periods comprises: determining that the fluorescent ink image moves once according to a preset length in the main scanning direction at the middle point of each line scanning period; and after each line scanning period is finished, determining that the fluorescent ink image moves once according to the preset length in the main scanning direction, and determining that the scanning length is the sum of the preset lengths of the two movements.
7. A fluorescent ink image reading apparatus, comprising:
an acquisition unit for acquiring a control signal;
a determining unit configured to determine a target resolution combination corresponding to the control signal from a predetermined resolution set, wherein the predetermined resolution set includes: at least one set of resolution combinations, each set of said resolution combinations comprising: a main scanning resolution and a sub-scanning resolution;
a reading unit for reading the fluorescent ink image with the target resolution combination;
wherein the reading unit includes:
a first determining module, configured to determine, according to a sub-scanning resolution in the target resolution combination, an optical signal read from at least one photosensitive window in a sub-scanning direction in a photoelectric conversion chip as a pixel signal, where the photoelectric conversion chip is configured to convert the optical signal into the pixel signal, and each pixel signal corresponds to a read pixel point;
a second determining module, configured to determine, according to the main scanning resolution in the target resolution combination, an order in which the light signals are read by the multiple rows of light sensing windows in each line scanning period, and a scanning length of the fluorescent ink image in a main scanning direction in each line scanning period, where the multiple rows of light sensing windows are arranged on the photoelectric conversion chip along a moving direction of the fluorescent ink image, and each light sensing window completes reading the light signals once in each line scanning period;
a third determining module, configured to determine a reading result of the fluorescent ink image according to the pixel signals read in the plurality of line scanning periods;
firstly, controlling the photosensitive windows in odd rows to read optical signals of multiple rows of pixel points of the fluorescent ink image; and then moving the photosensitive windows of the even rows of the fluorescent ink image to control the light signals of the multiple rows of pixel points of the fluorescent ink image after moving, so that the pixel points read by the photosensitive windows of the even rows and the pixel points read by the photosensitive windows of the odd rows are the same.
8. A storage medium characterized by comprising a stored program, wherein the program executes the method of reading a fluorescent ink image according to any one of claims 1 to 6.
9. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the method of reading a fluorescent ink image according to any one of claims 1 to 6 when running.
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