CN114782587B - Jet printing image processing method and jet printing system for solving jet printing linear step pixel - Google Patents
Jet printing image processing method and jet printing system for solving jet printing linear step pixel Download PDFInfo
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- 238000007639 printing Methods 0.000 title claims abstract description 121
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000010586 diagram Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000007641 inkjet printing Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 11
- 238000004590 computer program Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process 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
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/203—Drawing of straight lines or curves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
- B41J3/445—Printers integrated in other types of apparatus, e.g. printers integrated in cameras
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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
- G06T11/60—Editing figures and text; Combining figures or text
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/60—Rotation of whole images or parts thereof
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Abstract
The invention relates to the technical field of circuit board jet printing, in particular to a jet printing image processing method and a jet printing system for solving the problem of jet printing linear step pixels, wherein the jet printing image processing method for solving the problem of jet printing linear step pixels comprises the following steps: acquiring a vector diagram of a jet printing pattern; outputting a reference straight line in the vector diagram to obtain a reference image block; outputting non-reference patterns in the vector diagram in a bitmap mode to obtain a jet printing base diagram; acquiring a deflection angle of a product to be jet-printed; rotating and spraying a base map according to the obtained deflection angle; and attaching the reference pattern block to the rotated jet printing base pattern. The image processing method provided by the invention respectively outputs the reference straight line and the non-reference pattern in the vector diagram, rotates the jet printing base diagram according to the actual angle of the product placement, and then attaches the reference block to the rotated jet printing base diagram to obtain the processed jet printing image. The method provided by the invention solves the problem that the reference straight line has steps due to rotation, so that the reference straight line is protected in a horizontal and vertical state, and the positioning of the subsequent process is facilitated.
Description
Technical Field
The invention relates to the technical field of circuit board jet printing, in particular to a jet printing image processing method and a jet printing system for solving the problem of jet printing linear step pixels.
Background
Digital jet printing is a technology which utilizes an electronic information technology to display a pattern to be jet printed on a support in a jet printing mode after the pattern to be jet printed is digitalized. Different from the traditional printing technology, the digital jet printing does not need plate making, and the jet printing content can be changed at any time without the adjustment of hardware equipment. The digital jet printing has rich content, can be changed at any time, has stable jet printing effect, reliable quality, simple process and clear control, and is easy to realize automatic large-scale production.
Some explanatory characters and patterns and some benchmark marks need to be sprayed and printed by using a spray printing technology in the production process of the circuit board, wherein the requirement of the benchmark marks on the directionality is high. In actual production, zero error is difficult to achieve in the placement of the circuit board, after the circuit board is positioned by the CCD camera, the jet printing pattern is rotated and then jet printed according to the actual angle of the product placed on the platform, and therefore a pixel step is generated, as shown in fig. 1. To this end, the general processing method in the prior art is to set a rotating motor under the product placement platform to drive the product placement platform to rotate, so as to make the product face to the right, but this method is very costly, the platform structure needs to be changed, and usually the angle of product deviation is very small, and the scheme using the rotating motor is very costly.
The above-described problems are not much affected by general explanatory patterns, but such steps may cause quality problems in the accuracy of subsequent processes (e.g., chip packaging) for a reference line or the like used for CCD vision positioning.
Disclosure of Invention
In view of the above, it is desirable to provide a method and a system for processing a jet printing image, which solve the above problems.
The embodiment of the invention is realized in such a way that a jet printing image processing method for solving the problem of jet printing linear step pixels comprises the following steps:
acquiring a vector diagram of a jet printing pattern;
outputting a reference straight line in the vector diagram to obtain a reference image block;
outputting non-reference patterns in the vector diagram in a bitmap mode to obtain a jet printing base diagram;
acquiring a deflection angle of a product to be jet-printed;
rotating and spraying a base map according to the obtained deflection angle;
and attaching the reference pattern block to the rotated jet printing base pattern.
In one embodiment, the present invention provides a jet printing system comprising:
computer equipment for executing the jet printing image processing method for solving the jet printing straight line step pixel; and
and the jet printing equipment is communicated with the computer equipment and is used for acquiring the processed jet printing image and executing jet printing operation to jet print a pattern.
The image processing method provided by the invention respectively outputs the reference straight line and the non-reference pattern in the vector diagram, rotates the jet printing base diagram according to the actual angle of the product placement, and then attaches the reference block to the rotated jet printing base diagram to obtain the processed jet printing image. The method provided by the invention solves the problem that the reference straight line has steps due to rotation, so that the reference straight line is protected in a horizontal and vertical state, and the positioning of the subsequent process is facilitated. The method is suitable for putting the products again each time, realizes the online adjustment of the rotation angle of the base map according to the putting conditions of the products, and reduces the requirements on the putting of the products.
Drawings
FIG. 1 is a schematic view of a pixel step produced by jet printing after linear rotation in a prior art jet printed image;
FIG. 2 is a flowchart of a method for processing a printed image to resolve inkjet printed straight step pixels, according to an embodiment;
FIG. 3 is a sheet of inkjet printed images;
FIG. 4 is a reference block diagram output by the reference straight line A in FIG. 3;
FIG. 5 is a reference block diagram output by the reference straight line B in FIG. 3;
FIG. 6 is a reference plot of the output of the reference line C of FIG. 3;
FIG. 7 is a graph of the effect of the jet printed image of FIG. 3 after treatment by the present invention;
FIG. 8 is a block diagram of an exemplary inkjet printing system;
FIG. 9 is a block diagram of an internal structure of a computer device, according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script, without departing from the scope of the present disclosure.
As shown in fig. 2, in an embodiment, a method for processing a jet printing image to solve a jet printing straight step pixel is provided, which may specifically include the following steps:
acquiring a vector diagram of a jet printing pattern;
outputting a reference straight line in the vector diagram to obtain a reference image block;
outputting non-reference patterns in the vector diagram in a bitmap mode to obtain a jet printing base diagram;
acquiring a deflection angle of a product to be jet-printed;
rotating and spraying a base map according to the obtained deflection angle;
and attaching the reference pattern block to the rotated jet printing base pattern.
In this embodiment, in the circuit board design and production industry, the jet printing drawing generally adopts a GERBER format file, a pattern in the GERBER format file is a vector diagram and has a coordinate system, and a file for jet printing is in a bitmap format and is composed of pixels and does not have a coordinate system. The invention realizes the respective processing of the reference straight line and the non-reference pattern by executing the steps in the process of converting the GERBER format file into the bitmap file. In addition, it should be noted that, because the length and width of the reference base line are large, the step generated after rotation is obvious, the reference straight line is taken as an example for description in the invention, and the invention is also applicable to other reference patterns.
In the embodiment, the reference straight line is output independently to obtain a reference image block; and meanwhile, outputting the non-reference pattern to obtain the jet printing base image. The reference lines and the non-reference patterns may be specified by the user, and of course, corresponding identification rules may also be added, which is not further limited by the embodiment of the present invention.
In this embodiment, the deflection angle of the product to be jet-printed is determined by comparison after being captured by the CCD camera, which belongs to the application of the prior art, and this is not specifically described in the embodiment of the present invention.
In the embodiment, the jet printing bottom surface is rotated in the same direction according to the deflection angle of the product, so that the direction of the jet printing bottom image is matched with the deflected jet printing product; and then, attaching the reference pattern block to the rotated jet printing base pattern to obtain a bitmap file for jet printing, and performing jet printing to jet print the pattern.
The image processing method provided by the invention respectively outputs the reference straight line and the non-reference pattern in the vector diagram, rotates the jet printing base diagram according to the actual angle of the product placement, and then attaches the reference block to the rotated jet printing base diagram to obtain the processed jet printing image. The method provided by the invention solves the problem that the reference straight line has steps due to rotation, so that the reference straight line is protected in a horizontal and vertical state, and the positioning of the subsequent process is facilitated. The method is suitable for each product rearrangement, realizes the online adjustment of the rotation angle of the base map according to the product arrangement condition, and reduces the requirement of product arrangement.
As a preferred embodiment of the present invention, the outputting of the reference straight line in the vector diagram to obtain a reference tile block includes:
outputting parameters of a reference straight line, wherein the parameters comprise a starting point coordinate, an end point coordinate and a line width;
generating a reference straight line according to the output parameters of the reference straight line and a preset resolution;
generating a background area containing a reference straight line;
and converting the background area containing the reference straight line into a bitmap in a rotating mode and outputting the bitmap to obtain a reference image block.
In this embodiment, a GERBER format is adopted, and the start point coordinates, the weak point coordinates, and the line width of the reference straight line can be directly read; after reading, in the system, each reference straight line is independently generated according to the preset resolution and the read parameters of the reference straight lines, a background area is generated at the lower layer of the reference straight lines, and the background area and the reference straight lines are output as a whole in a bitmap format to obtain a reference image block. Preferably, the background area is the same color as the background of the jet-printed base image (e.g., white or transparent). Fig. 3 shows a sheet of original printed image, and fig. 4, 5, and 6 show reference blocks obtained by outputting the reference block A, B, C in fig. 3.
As a preferred embodiment of the present invention, the generating a background area containing a reference straight line includes:
determining a rectangular area formed by straight lines according to the straight line parameters;
the center of a rectangular area formed by straight lines is taken as a midpoint, and two diagonal lines of the rectangular area are extended to two ends;
and (4) taking the end points of the two lengthened diagonal lines as corner points to make a rectangle to obtain a background area.
In the present embodiment, it can be understood that by giving a line width to the reference straight line, the reference straight line forms a rectangular region; the center of the rectangular area formed by the reference straight line may be determined by the intermediate point of the start point coordinates and the end point coordinates.
In this embodiment, the rectangular area determined by the reference line may determine two diagonal lines, extend the diagonal lines, and obtain a rectangular background area by using four points of the extended diagonal lines as corner points, where the rectangular background area includes the reference line of the rectangle. In this embodiment, the length of each of the two diagonal lines is not particularly limited, and optionally, the extension may be performed according to the line width of the reference straight line, or may be 1.2 times, 1.5 times, 2 times, or the like of the line width.
As a preferred embodiment of the present invention, the rotating and printing the base map according to the obtained deflection angle includes:
determining a base point;
and rotating the spray printing base map by a deflection angle around the base point.
In the present embodiment, the determined base point is used as the rotation center, and the angle of rotation is determined by the slip angle of the product captured by the CCD camera.
As a preferred embodiment of the present invention, the determining a base point includes:
determining the central point of each reference straight line according to the parameters of each reference straight line;
and taking the point with the minimum sum of the distances from the center points of the reference straight lines as a base point.
In the present embodiment, three reference straight lines are assumed, and the center point of each reference straight line is (X) 1 ，Y 1 ）、（X 2 ，Y 2 ) And (X) 3 ，Y 3 ) And the base point coordinate is (X, Y), the sum of the distances is expressed as:
for the above formula, the base point coordinates can be obtained by solving the maximum value of D, and the solution method includes derivation, fermat search, and the like, which belongs to the direct application of the prior art, and is not described again in the embodiment of the present invention.
In the embodiment, by searching for the base point by the method, the deviation of the central angle of each reference straight line before and after rotation can be made smaller, so that the positional deviation of the front and rear reference straight lines is made smaller, the requirement can be met more easily, and the difference after the rotation processing does not exceed the acceptance range.
As a preferred embodiment of the present invention, the attaching the reference pattern block to the rotated inkjet print base includes:
determining the central point of each reference straight line according to the parameters of each reference straight line;
determining the coordinates of the center points of the reference straight lines on the rotated spray printing base map;
and enabling the central point of the reference straight line in the reference image block to coincide with the central point of the corresponding reference straight line on the rotated jet printing base image.
In the present embodiment, through the above steps, the maximum deviation of the front and rear reference straight lines is reduced by half with respect to the reference with the end points of the reference straight lines as coincidence, and the deviation requirement is more easily satisfied. As shown in fig. 7, for a jet-printed image processed by the method provided by the present invention, it can be seen that in the figure, the reference straight line is not deformed, and the non-reference character generates a pixel step.
As a preferred embodiment of the present invention, the method for processing a jet printing image to solve the problem of jet printing straight step pixels further includes:
calculating the maximum deviation between each attached reference straight line and the corresponding reference straight line in the vector diagram;
and judging whether the calculated maximum deviation is greater than a set threshold value, and if so, giving an alarm.
In the embodiment, for the jet printing image which does not meet the deviation requirement, the system sends out alarm information to prompt a user to process. In the embodiment of the present invention, it should be noted that the reason for the excessive deviation is caused by the excessive deviation of the product placement angle, and at this time, the product only needs to be placed again. Therefore, the method provided by the invention solves the problem that steps appear on straight lines, improves the tolerance of the product placing deflection angle, and is beneficial to orderly spray printing production.
As shown in fig. 8, an embodiment of the present invention further provides a jet printing system, including:
computer equipment for executing the jet printing image processing method for solving the jet printing straight line step pixel according to any one embodiment of the invention; and
and the jet printing equipment is communicated with the computer equipment and is used for acquiring the processed jet printing image and executing jet printing operation to jet print a pattern.
In this embodiment, the computer device in the inkjet printing system is used to execute the inkjet printing image processing method for solving the problem of inkjet printing straight line step pixels provided in the embodiment of the present invention, and for explanation of each step of the method, reference is made to the foregoing contents of the present invention, and details are not repeated here.
In the embodiment, the jet printing equipment belongs to the existing mature equipment, and the invention does not relate to the structural improvement of the jet printing equipment; the jet printing device is connected with the computer equipment, and jet printing images obtained by processing of the computer equipment are obtained and jet printing actions are executed to obtain jet printing patterns. In the process, the deflection angle of the product required by the computer device is acquired on line through the CCD camera arranged on the jet printing setting workbench.
In the jet printing system provided by the invention, the computer equipment respectively outputs the reference straight line and the non-reference pattern in the vector diagram, the jet printing base diagram is rotated according to the actual angle of the product placement, then the reference block is attached to the rotated jet printing base diagram to obtain the processed jet printing image, and the jet printing equipment executes the jet printing action to obtain the pattern. The jet printing system provided by the invention solves the problem that the reference straight line has steps due to rotation, so that the reference straight line is protected in a horizontal and vertical state, and the positioning of the subsequent process is facilitated. The system is suitable for placing products each time, realizes online adjustment of the rotation angle of the base map according to the placing condition of the products, and reduces the requirement on placing the products.
FIG. 9 is a diagram illustrating an internal structure of a computer device in one embodiment. The computer device can be specifically applied to the jet printing system shown in fig. 8. As shown in fig. 9, the computer apparatus includes a processor, a memory, a network interface, an input device, and a display screen, which are connected through a system bus. The memory comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and also stores a computer program, and when the computer program is executed by a processor, the computer program can enable the processor to realize the jet printing image processing method for solving the jet printing straight line step pixel provided by the embodiment of the invention. The internal memory may also store a computer program, and when the computer program is executed by the processor, the computer program may enable the processor to execute the method for processing the inkjet image to solve the step pixels of the inkjet printing straight line provided by the embodiment of the present invention. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the configuration shown in fig. 9 is a block diagram of only a portion of the configuration associated with aspects of the present invention and is not intended to limit the computing devices to which aspects of the present invention may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is proposed, the computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
acquiring a vector diagram of a jet printing pattern;
outputting a reference straight line in the vector diagram to obtain a reference image block;
outputting non-reference patterns in the vector diagram in a bitmap mode to obtain a jet printing base diagram;
acquiring a deflection angle of a product to be jet-printed;
rotating and spraying a base map according to the obtained deflection angle;
and attaching the reference pattern block to the rotated jet printing base pattern.
In one embodiment, a computer readable storage medium is provided, having a computer program stored thereon, which, when executed by a processor, causes the processor to perform the steps of:
acquiring a vector diagram of a jet printing pattern;
outputting a reference straight line in the vector diagram to obtain a reference image block;
outputting non-reference patterns in the vector diagram in a bitmap mode to obtain a jet printing base diagram;
obtaining a deflection angle of a product to be jet-printed;
rotating and spraying a base map according to the obtained deflection angle;
and attaching the reference pattern block to the rotated jet printing base pattern.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A jet printing image processing method for solving the problem of jet printing straight line step pixels is characterized by comprising the following steps:
acquiring a vector diagram of a jet printing pattern;
outputting a reference straight line in the vector diagram to obtain a reference image block;
outputting non-reference patterns in the vector diagram in a bitmap mode to obtain a jet printing base diagram;
acquiring a deflection angle of a product to be jet-printed;
rotating and spraying a base map according to the obtained deflection angle;
attaching the reference pattern block to the rotated jet printing base pattern;
the reference straight line in the output vector diagram obtains a reference picture block, and the reference picture block comprises:
outputting parameters of a reference straight line, wherein the parameters comprise a starting point coordinate, an end point coordinate and a line width;
generating a reference straight line according to the output parameters of the reference straight line and a preset resolution;
generating a background area containing a reference straight line;
converting the background area containing the reference straight line into a bitmap and outputting the bitmap to obtain a reference image block;
the attaching of the reference pattern block to the rotated jet-printed base pattern includes:
determining the central point of each reference straight line according to the parameters of each reference straight line;
determining the coordinates of the center points of the reference straight lines on the rotated spray printing base map;
and enabling the central point of the reference straight line in the reference image block to coincide with the central point of the corresponding reference straight line on the rotated jet printing base image.
2. The method for processing a printed image according to claim 1, wherein the generating a background region for accommodating a reference line comprises:
determining a rectangular area formed by straight lines according to the straight line parameters;
the center of a rectangular area formed by straight lines is taken as a midpoint, and two diagonal lines of the rectangular area are extended to two ends;
and (4) taking the end points of the two lengthened diagonal lines as corner points to make a rectangle to obtain a background area.
3. The method for processing the jet printing image for solving the problem of the step pixel of the jet printing straight line according to the claim 1, wherein the step of rotating the jet printing base map according to the acquired deflection angle comprises the following steps:
determining a base point;
and rotating the spray printing base map by a deflection angle around the base point.
4. The method for processing inkjet printing images to solve the inkjet printing straight step pixel according to claim 3, wherein the determining a base point comprises:
determining the central point of each reference straight line according to the parameters of each reference straight line;
and taking the point with the minimum sum of the distances from the center points of the reference straight lines as a base point.
5. The method for processing the jet printing image for solving the jet printing straight-line step pixel according to claim 1, wherein the method for processing the jet printing image for solving the jet printing straight-line step pixel further comprises the following steps:
calculating the maximum deviation between each attached reference straight line and the corresponding reference straight line in the vector diagram;
and judging whether the calculated maximum deviation is greater than a set threshold value, and if so, giving an alarm.
6. An inkjet printing system, comprising:
computer equipment for executing the jet printing image processing method for solving the jet printing straight line step pixel according to any one of claims 1 to 5; and
and the jet printing equipment is communicated with the computer equipment and is used for acquiring the processed jet printing image and executing jet printing operation to jet print a pattern.
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