CN112927320A - Method, device and equipment for printing watermark characters and printer - Google Patents
Method, device and equipment for printing watermark characters and printer Download PDFInfo
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- CN112927320A CN112927320A CN202110253426.8A CN202110253426A CN112927320A CN 112927320 A CN112927320 A CN 112927320A CN 202110253426 A CN202110253426 A CN 202110253426A CN 112927320 A CN112927320 A CN 112927320A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000010606 normalization Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000255969 Pieris brassicae Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/001—Texturing; Colouring; Generation of texture or colour
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1268—Job submission, e.g. submitting print job order or request not the print data itself
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/203—Drawing of straight lines or curves
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Abstract
The invention relates to the technical field of watermark printing, in particular to a method, a device, equipment and a printer for printing watermark characters, wherein the method comprises the steps of obtaining a watermark character picture to be printed; carrying out dithering processing on the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture; splitting continuous white areas in the dithered character picture to obtain a target printed picture; and converting the target printing picture into a printing instruction, and sending the printing instruction to the printing equipment. By adopting the technical scheme, even if the printer is common, the printing of watermark characters can be realized, and the problem that the printing of the express bill influences the turnover efficiency of the express is effectively avoided.
Description
Technical Field
The invention relates to the technical field of watermark printing, in particular to a method, a device, equipment and a printer for printing watermark characters.
Background
The express delivery trade needs to print the express delivery bill of a large amount of paper editions, and, printing electron bill of face business is more and more complicated, need carry the watermark characters on some express delivery bills. However, printers in the market at present are various, and some printers can identify and execute a watermark character printing instruction, can print watermark characters, and some printers cannot identify the watermark character printing instruction, cannot print watermark characters, influence the printing of express waybill, and then influence the turnover efficiency of express delivery.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus, a device and a printer for printing watermark characters, so as to solve the problem that some printers in the current market cannot identify a watermark character printing instruction, cannot print watermark characters, affect printing of an express bill, and further affect the express turnover efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides a method for printing watermark characters, including:
acquiring a watermark character picture to be printed;
carrying out dithering processing on the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture;
splitting continuous white areas in the dithered character picture to obtain a target printed picture;
and converting the target printing picture into a printing instruction, and sending the printing instruction to printing equipment.
Further, the above method for printing watermark characters, where the obtaining of the watermark character picture to be printed includes:
acquiring watermark characters to be printed;
and converting the watermark characters into the watermark character pictures.
Further, the above printing method of the watermark text, where a picture dithering algorithm is adopted to dither the watermark text picture to obtain a dithered text picture, includes:
and scanning pixels in the watermark character picture according to a preset scanning mode by adopting a Floyd-Steinberg tracing algorithm, carrying out pixel processing, and superposing errors generated after the pixel processing on adjacent pixels which are not subjected to standardization processing to obtain the dither character picture.
Further, in the above method for printing watermark characters, the pixel processing includes a normalization processing or a binarization processing.
Further, the above printing method of the watermark text splits the white area in the dithered text picture to obtain a target printed picture, including:
and splitting the dithered character picture on continuous white rows, and splitting the split dithered character picture on continuous white columns to obtain the target printed picture.
On the other hand, the invention also provides a printing device for the watermark characters, which comprises:
the acquisition module is used for acquiring a watermark character picture to be printed;
the dithering module is used for dithering the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture;
the splitting module is used for splitting continuous white areas in the dithered character picture to obtain a target printed picture;
and the conversion module is used for converting the target printing picture into a printing instruction and sending the printing instruction to printing equipment.
Further, the above printing apparatus for the watermark characters, the obtaining module, is specifically configured to obtain the watermark characters to be printed; and converting the watermark characters into the watermark character pictures.
Further, in the above apparatus for printing watermark characters, the dither module is specifically configured to scan pixels in the watermark character picture according to a preset scanning manner by using a Floyd-Steinberg dithering algorithm, perform pixel processing, and superimpose an error generated after the pixel processing on an adjacent pixel that is not subjected to the standardization processing, so as to obtain the dithered character picture.
In another aspect, the present invention further provides a device for printing watermark characters, including a processor and a memory, where the processor is connected to the memory:
the processor is used for calling and executing the program stored in the memory;
the memory is used for storing the program, and the program is at least used for executing the printing method of the watermark characters.
In another aspect, the present invention provides a printer including a printing apparatus and the watermark text printing apparatus according to claim 9;
and the printing equipment is connected with the printing equipment of the watermark characters.
The invention relates to a method, a device, equipment and a printer for printing watermark characters, wherein the method comprises the steps of obtaining a watermark character picture to be printed; carrying out dithering processing on the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture; splitting continuous white areas in the dithered character picture to obtain a target printed picture; and converting the target printing picture into a printing instruction, and sending the printing instruction to the printing equipment. By adopting the technical scheme, even if the printer is common, the printing of watermark characters can be realized, and the problem that the printing of the express bill influences the turnover efficiency of the express is effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart provided by an embodiment of a method for printing watermark text according to the present invention;
FIG. 2 is a diagram of processing effects provided by an embodiment of the method for printing watermark characters according to the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for printing watermark text according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a device for printing watermark text according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a printer according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a flowchart provided by an embodiment of a method for printing watermark text according to the present invention. Referring to fig. 1, the present embodiment may include the following steps:
and S11, acquiring the watermark character picture to be printed.
In this embodiment, the watermark text picture to be printed may be obtained first.
In an optional embodiment, the watermark text picture to be printed is obtained according to the following steps:
step one, acquiring watermark characters to be printed;
and step two, converting the watermark characters into watermark character pictures.
Specifically, the user may preset the watermark characters to be printed, and after the watermark characters to be printed are acquired in this embodiment, the watermark characters to be printed are converted into a watermark character picture.
It should be noted that converting text into pictures is a very mature technology in the prior art, and is not described herein.
And S12, carrying out dithering processing on the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture.
Thermal printers can only print black dots, whereas watermarks are grey and can be processed using the dithering technique in image processing. The diathermy technique is a way of displaying a picture using limited colors to allow one to see more colors than the actual picture. This is typically used in situations where there are few colors, by randomly adding different colors between adjacent pixels to modify the image.
In the embodiment, a Floyd-Steinberg dithering algorithm is used, the algorithm realizes dithering by using error diffusion, pixels in a watermark character picture are scanned according to a preset scanning mode, and pixel processing is performed, wherein the pixelation processing comprises standardization processing or binarization processing, and errors generated after the pixel processing are superposed on adjacent pixels which are not subjected to the standardization processing, so that the dithered character picture is obtained.
For example, pixels of the watermark character picture are scanned from left to right and from top to bottom and are normalized (or binarized) one by one, and an error generated after the pixels are normalized is superposed on an adjacent pixel, so that the processed pixel is not influenced, and the dither character picture is obtained. The effect of this is that if some pixels are rounded down, the probability of the next pixel being rounded up is greater, thus minimizing the average quantization error.
The following is the way in which Floyd-Steinberg error diffusion is calculated:
for each y from top to bottom
for each x from left to right
oldpixel:＝pixel[x][y]
newpixel:＝find_closest_palette_color(oldpixel)
pixel[x][y]:＝newpixel
quant_error:＝oldpixel–newpixel
pixel[x+1][y]:＝pixel[x+1][y]+quant_error*7/16
pixel[x-1][y+1]:＝pixel[x-1][y+1]+quant_error*3/16
pixel[x][y+1]:＝pixel[x][y+1]+quant_error*5/16
pixel[x+1][y+1]:＝pixel[x+1][y+1]+quant_error*1/16。
fig. 2 is a processing effect diagram provided by an embodiment of the method for printing watermark characters according to the present invention.
As shown in fig. 2, fig. 2a is an effect diagram before processing, and fig. 2b is an effect diagram after processing.
And S13, splitting continuous white areas in the dithered character picture to obtain a target printed picture.
Optionally, the white area in the dithered text picture can be split out, so as to obtain the target printed picture. The method comprises the following specific steps:
and splitting the dithered character picture on continuous white rows, and splitting the split dithered character picture on continuous white columns to obtain a target printed picture.
Specifically, since the watermark characters are generally large, the watermark characters contain a large white area, especially after rotation. Too large watermark text can affect the instruction size and affect the print speed. Therefore, in this embodiment, the dithered character picture is split in the continuous white rows, then the picture is split into the pictures with no more than 24 rows, and then the split dithered character picture is split in the continuous white columns. At this time, a group of pictures with as few white areas as possible is generated, namely the target printed picture.
And S14, converting the target printing picture into a printing instruction, and sending the printing instruction to the printing equipment.
The printing method of the watermark characters comprises the steps of obtaining a watermark character picture to be printed; carrying out dithering processing on the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture; splitting continuous white areas in the dithered character picture to obtain a target printed picture; and converting the target printing picture into a printing instruction, and sending the printing instruction to the printing equipment. By adopting the technical scheme of the embodiment, even if the printer is common, the printing of the watermark characters can be realized, and the problem that the printing of the express bill influences the turnover efficiency of the express is effectively avoided.
Based on a general inventive concept, the invention further provides a printing device of the watermark characters, which is used for realizing the embodiment of the method.
Fig. 3 is a schematic structural diagram provided by an embodiment of the apparatus for printing watermark characters according to the present invention.
As shown in fig. 3, the apparatus for printing watermark characters of the present embodiment includes:
an obtaining module 21, configured to obtain a watermark text picture to be printed;
the dithering module 22 is configured to perform dithering processing on the watermark text image by using an image dithering algorithm to obtain a dithered text image;
the splitting module 23 is configured to split continuous white areas in the dithered text picture to obtain a target printed picture;
and the conversion module 24 is used for converting the target printing picture into a printing instruction and sending the printing instruction to the printing equipment.
In the printing apparatus for watermark characters of this embodiment, the obtaining module 21 obtains a watermark character picture to be printed; the dithering module 22 performs dithering processing on the watermark character pictures by adopting a picture dithering algorithm to obtain dithered character pictures; the splitting module 23 splits continuous white areas in the dithered character picture to obtain a target printed picture; the conversion module 24 converts the target print picture into a print instruction, and sends the print instruction to the printing apparatus. By adopting the technical scheme of the embodiment, even if the printer is common, the printing of the watermark characters can be realized, and the problem that the printing of the express bill influences the turnover efficiency of the express is effectively avoided.
In some optional embodiments, the obtaining module is specifically configured to obtain watermark characters to be printed; and converting the watermark characters into watermark character pictures.
In some optional embodiments, the dithering module is specifically configured to scan pixels in the watermark text picture according to a preset scanning manner by using a Floyd-Steinberg dithering algorithm, perform pixel processing on the pixels, and superimpose an error generated after the pixel processing on an adjacent pixel which is not subjected to the normalization processing to obtain the dithered text picture.
In some alternative embodiments, the pixel processing includes a normalization process or a binarization process.
In some optional embodiments, the splitting module 23 splits the dithered text image in consecutive white rows, and splits the split dithered text image in consecutive white columns to obtain the target printed image.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Based on a general inventive concept, the invention further provides a printing device for the watermark characters, which is used for realizing the embodiment of the method.
Fig. 4 is a schematic structural diagram provided by an embodiment of the apparatus for printing watermark characters in accordance with the present invention.
As shown in fig. 4, the apparatus for printing watermark text of the present embodiment includes a processor 31 and a memory 32, and the processor 31 is connected to the memory 32. Wherein, the processor 31 is used for calling and executing the program stored in the memory 32; the memory 32 is used for storing a program for executing at least the printing method of watermark text in the above embodiment.
The present invention also provides a printer based on one general inventive concept.
FIG. 5 is a schematic diagram of a printer according to an embodiment of the present invention.
As shown in fig. 5, the printer of the present embodiment includes a printing device 41 and a printing device 42 of the watermark text of the above embodiment;
the printing device 41 is connected to a watermark text printing device 42.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for printing watermark characters is characterized by comprising the following steps:
acquiring a watermark character picture to be printed;
carrying out dithering processing on the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture;
splitting continuous white areas in the dithered character picture to obtain a target printed picture;
and converting the target printing picture into a printing instruction, and sending the printing instruction to printing equipment.
2. The method for printing the watermark text according to claim 1, wherein the obtaining of the watermark text picture to be printed comprises:
acquiring watermark characters to be printed;
and converting the watermark characters into the watermark character pictures.
3. The method for printing the watermark text according to claim 1, wherein the dithering the watermark text picture by using a picture dithering algorithm to obtain a dithered text picture comprises:
and scanning pixels in the watermark character picture according to a preset scanning mode by adopting a Floyd-Steinberg tracing algorithm, carrying out pixel processing, and superposing errors generated after the pixel processing on adjacent pixels which are not subjected to standardization processing to obtain the dither character picture.
4. The method for printing watermark text according to claim 2, wherein the pixel processing includes a normalization processing or a binarization processing.
5. The method for printing the watermark text according to claim 1, wherein splitting the white area in the dithered text picture to obtain the target printed picture comprises:
and splitting the dithered character picture on continuous white rows, and splitting the split dithered character picture on continuous white columns to obtain the target printed picture.
6. An apparatus for printing a watermark text, comprising:
the acquisition module is used for acquiring a watermark character picture to be printed;
the dithering module is used for dithering the watermark character picture by adopting a picture dithering algorithm to obtain a dithered character picture;
the splitting module is used for splitting continuous white areas in the dithered character picture to obtain a target printed picture;
and the conversion module is used for converting the target printing picture into a printing instruction and sending the printing instruction to printing equipment.
7. The apparatus for printing watermark text according to claim 6, wherein the obtaining module is specifically configured to obtain the watermark text to be printed; and converting the watermark characters into the watermark character pictures.
8. The apparatus for printing watermark characters as claimed in claim 6, wherein the dithering module is specifically configured to scan pixels in the watermark character picture according to a preset scanning manner by using a Floyd-Steinberg dithering algorithm, perform pixel processing, and superimpose an error generated after the pixel processing on an adjacent pixel that is not subjected to the normalization processing, so as to obtain the dithered character picture.
9. A device for printing watermark text, comprising a processor and a memory, the processor being coupled to the memory:
the processor is used for calling and executing the program stored in the memory;
the memory is used for storing the program, and the program is at least used for executing the printing method of the watermark characters in any one of claims 1-5.
10. A printer comprising a printing device and the watermark text printing device according to claim 9;
and the printing equipment is connected with the printing equipment of the watermark characters.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113805822A (en) * | 2021-08-26 | 2021-12-17 | 福建魔方电子科技有限公司 | Ticket printing generation method, device, equipment and medium on embedded terminal |
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| JPH10322565A (en) * | 1997-05-20 | 1998-12-04 | Canon Inc | Device and method for processing image |
| US20060075241A1 (en) * | 2004-09-27 | 2006-04-06 | Frederic Deguillaume | Character and vector graphics watermark for structured electronic documents security |
| CN102271213A (en) * | 2010-06-07 | 2011-12-07 | 夏普株式会社 | Image processing apparatus, image forming apparatus, and image processing method |
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2021
- 2021-03-05 CN CN202110253426.8A patent/CN112927320A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10322565A (en) * | 1997-05-20 | 1998-12-04 | Canon Inc | Device and method for processing image |
| US20060075241A1 (en) * | 2004-09-27 | 2006-04-06 | Frederic Deguillaume | Character and vector graphics watermark for structured electronic documents security |
| CN102271213A (en) * | 2010-06-07 | 2011-12-07 | 夏普株式会社 | Image processing apparatus, image forming apparatus, and image processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113805822A (en) * | 2021-08-26 | 2021-12-17 | 福建魔方电子科技有限公司 | Ticket printing generation method, device, equipment and medium on embedded terminal |
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