Method for simulating hair strand texture

Abstract

The present invention discloses a method for simulating hair texture, including: constructing hair patterns and splicing them, wherein any two adjacent hair patterns can be seamlessly spliced; adjusting the gray-scale values of the hairs on the hair patterns, wherein the difference in gray-scale values between any two adjacent hairs is 30 or more; lithographing and electroplating the information of the hair patterns through a platinum embossing machine and a laser to obtain a stamper; embossing the pattern on the stamper onto a plate cylinder, and printing the hair texture through the plate cylinder. To improve the authenticity of hair simulation. It can be applied to the field of hair simulation.

Description

Technical Field

[0001] The present invention relates to the field of simulating hair texture, and in particular to a method for simulating hair texture. Background Art

[0002] Currently, people have higher and higher pursuits for hair. Since the beginning of visual aesthetics, people have been simulating the planarization of hair effects through different channels and different methods. The fineness and natural luster of hair filaments have various characteristics such as being ever-changing and having inconsistent rules. However, the current means cannot represent the true layers of hair filaments and the visual angle changes of the flowing luster. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a method for simulating hair texture to improve the authenticity of hair simulation.

[0004] A first aspect of the present invention provides a method for simulating hair texture, including: constructing hair patterns and splicing them, wherein any two adjacent hair patterns can be seamlessly spliced; adjusting the gray scale value of the hair on the hair pattern, wherein the difference between the gray scale values of any two adjacent hairs is 30 or more; performing photolithography and electroplating on the information of the hair pattern through a platinum relief machine and a laser to obtain a stamper; embossing the pattern on the stamper onto a plate cylinder, and printing the hair texture through the plate cylinder.

[0005] According to some embodiments of the present invention, the constructing hair patterns and splicing them includes: copying the hair patterns so that the number of the hair patterns is an integer multiple of the number of circumferences, wherein the number of circumferences is the number of the hair pattern stamper around the plate cylinder in one circle.

[0006] According to some embodiments of the present invention, the constructing hair patterns and splicing them includes: adjusting the size of the hair pattern to be less than or equal to 200 mm by 200 mm.

[0007] According to some embodiments of the present invention, after adjusting the gray scale value of the hair on the hair pattern, it further includes: adjusting the texture angle of the hair on the hair pattern so that the difference between the texture angles of adjacent hairs is 30 degrees or more.

[0008] According to some embodiments of the present invention, after adjusting the texture angle of the hair on the hair pattern, it further includes: adjusting the gray scale value of the hair on the hair pattern so that the gray scale values corresponding to different texture angles are different.

[0009] According to some embodiments of the present invention, pressing the pattern on the embossing plate onto the plate cylinder, and printing the hair texture through the plate cylinder includes: fixing the embossing plate to a masking film, wherein the masking film includes a light-shielding area and a transparent area, and the length of the transparent area is equal to the circumferential perimeter of the plate cylinder.

[0010] According to some embodiments of the present invention, pressing the pattern on the embossing plate onto the plate cylinder, and printing the hair texture through the plate cylinder includes: applying UV varnish on the embossing plate overlapping with the transparent area of the masking film; pressing the pattern of the embossing plate onto the plate cylinder, and turning on the UV lamp for curing.

[0011] According to some embodiments of the present invention, pressing the pattern on the embossing plate onto the plate cylinder, and printing the hair texture through the plate cylinder includes: vacuum coating the plate cylinder.

[0012] Another aspect of the present invention provides an electronic device, including a processor and a memory; the memory is used for storing a program; the processor executes the program to implement the method for simulating hair texture as described in any one of the above.

[0013] The electronic device according to the embodiments of the present invention has at least the same beneficial effects as the above-described method for simulating hair texture.

[0014] Another aspect of the present invention provides a computer-readable storage medium, where the storage medium stores a program, and the program is executed by a processor to implement the method for simulating hair texture as described in any one of the above.

[0015] The computer-readable storage medium according to the embodiments of the present invention has at least the same beneficial effects as the above-described method for simulating hair texture.

[0016] Embodiments of the present invention also disclose a computer program product or a computer program, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device can read the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the foregoing method.

[0017] Embodiments of the present invention also disclose a computer program product or a computer program, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device can read the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the foregoing method.

[0018] Embodiments of the present invention construct hair patterns and splice them, and adjust the gray scale values of the hair patterns so that the difference in gray scale values between two adjacent hairs is 30 or more, thereby making the hairs appear three-dimensional and layered visually. Then, through a platinum embossing machine and a laser, lithography and electroplating are performed based on the hair pattern to obtain a stamper, and the stamper is molded onto a plate cylinder. After that, printing of the hair texture is performed through the plate cylinder to simulate the hair texture. The use of the platinum embossing machine improves the visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a flowchart of a method for simulating hair texture provided by an embodiment of the present invention;

[0021] Figure 2 It is a framework of a hair pattern provided by an embodiment of the present invention;

[0022] Figure 3 It is a hair pattern before adjustment provided by an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of adjustment of a hair pattern provided by an embodiment of the present invention;

[0024] Figure 5 It is a hair pattern after adjustment provided by an embodiment of the present invention;

[0025] Figure 6 It is a mask film provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] Currently, for the hair effect in virtual reality, common technologies cannot achieve the visual effect of gloss flow. The disadvantages of the existing technologies cannot reflect the gloss characteristics of the hair visual effect on the planar effect and cannot perform any imitation. At the same time, it cannot adapt to the diversification of colors in current printing and cannot reflect the sense of hierarchy. Since the evolution from printing to holographic simulation, the images formed by the optical dot matrix direct writing method all show rainbow light colors. In practical applications, it is restricted by the printing colors and cannot design more hair flow effects. Therefore, this application proposes a method for simulating hair texture to simulate real hair texture.

[0028] Reference Figure 1 , Figure 1 is a flowchart of the method for simulating hair texture provided by an embodiment of the present invention, including the following steps:

[0029] Step S110, construct a hair pattern and splice it, where any two adjacent hair patterns can be seamlessly spliced.

[0030] Specifically, first design the framework of the hair pattern. The maximum size of the unit does not exceed 200mm x 200mm because of the limitation of the lithography area, and the larger the area, the more serious the color difference problem. Then, the texture of the hair can be drawn within the framework to obtain a more realistic hair pattern. Copy the hair pattern because after lithography based on the hair pattern, the pattern on the stamper needs to be transferred to the plate cylinder. Therefore, it is necessary to determine the number of hair patterns required for one week of transfer to the plate cylinder, that is, the circumferential number. Then, adjust the size of the hair pattern so that the number is an integer multiple of the circumferential number. Reference Figure 2 , Figure 2 is the framework of the hair pattern provided by an embodiment of the present invention. In order to improve the authenticity of hair simulation, any two adjacent hair patterns need to be seamlessly spliced. Any adjacent includes not only adjacent left and right but also adjacent up and down. As long as splicing is performed, as Figure 2 shown, where the gray ones are individual hair patterns. After copying and splicing the hair patterns, the spliced patterns need to be seamless.

[0031] Step S120, adjust the gray scale value of the hair on the hair pattern, where the difference in the gray scale value between any two adjacent hairs is 30 or more.

[0032] Specifically, after designing the framework of the hair pattern, draw the hair texture within the framework, as Figure 3 shown, Figure 3The hair strand pattern before adjustment provided by the embodiment of the present invention. Subsequently, the gray scale values of the hair strands on the hair strand pattern are adjusted so that the difference in gray scale values between any two adjacent hair strands is 30 or more. It should be noted that since the hair strand patterns are spliced, the difference in gray scale values between two adjacent hair strands at the splicing position of adjacent hair strand patterns should also be 30 or more. Exemplarily, if the right side of the A hair strand pattern is connected to the left side of the B hair strand pattern, the gray scale value of the hair strand closest to the right edge of the A hair strand pattern should have a difference of 30 or more from the gray scale value of the hair strand closest to the left edge of the B hair strand pattern. Further, the texture angles of the hair strands on the hair strand pattern are adjusted so that the difference in texture angles between adjacent hair strands is 30 degrees or more. Further, the gray scale values corresponding to different texture angles are different, that is, a corresponding relationship between the texture angle and the gray scale value is constructed. As Figure 4 shown, Figure 4 is a schematic diagram of the adjustment of the hair strand pattern provided by the embodiment of the present invention. From left to right, RBG150, RBG60, and RBG235 are selected in sequence. The color scale value between adjacent hair strands exceeds 30, and the difference in texture angles between adjacent hair strands should be 30 degrees or more. Refer to Figure 5 and Figure 3 for the difference. It can be seen that after adjustment, the hair strands are more layered. When the difference in color scale is large and the angle change also becomes larger, it will make the hair strands more three-dimensional and layered. Different texture angles can form a staggered brightness change to achieve the light and shadow layer effect of the hair strands. Further, the adjustment of the hair strand pattern also includes: the color mode is adjusted to the RGB mode, the filling type is gradient, the gradient color is from RGB0 - RGB255, the gradient type is solid bottom, and the smoothness is 0%. In this way, the color transition can be made more natural and not appear abrupt, further improving the authenticity of the hair strand simulation. The style is selected as burst-like and aligned with the layer. The angle is 90°, the dithering is empty, and the scaling is 100%. The channel layers are compounded, and this file is completed. Obtain Figure 5 , Figure 5 which is the adjusted hair strand pattern provided by the embodiment of the present invention. Comparing Figure 3 and Figure 5 , it can be clearly seen that after adjustment, the hair strands have a more distinct layer sense and are closer to the hair strands in reality. Then, the lithography process can be entered.

[0033] Step S130, the information of the hair strand pattern is lithographed and electroplated by a platinum embossing machine and a laser to obtain a stamper.

[0034] Specifically, the adjusted hair pattern-related information is input into a platinum relief machine, and the hair pattern is lithographed onto a rubber plate by a laser. After electroforming, a nickel plate, i.e., a mold plate, is obtained. Through the performance of platinum relief lithography technology, the effect of real hair can be simulated on a flat material. Using the technology of platinum relief lithography for hair greatly improves the novel visual effect for consumers and the shelf effect required by merchants.

[0035] Step S140: Emboss the pattern on the mold plate onto the plate cylinder, and print the hair texture through the plate cylinder.

[0036] Specifically, the mold plate is fixed on a mask film. Among them, the side connected to the mask film is the side of the mold plate without the hair pattern. Then, UV varnish is applied to the mold plate. It should be noted that the mask film includes a transparent area and a light-shielding area. There is a hair pattern on the mask film. The light-shielding areas are arranged on both sides of the mask film. The shape of the edge of the light-shielding area is the hair pattern. When the mold plate is fixed on the mask film, the UV varnish is applied to the overlapping area, and then the mold plate together with the mask film is embossed onto the plate cylinder. It should be noted that the length of the transparent area of the mask film is the same as the circumferential length of the plate cylinder. More specifically, since the hair patterns are seamlessly joined after splicing, the shape of the junction between the transparent area and the light-shielding area of the mask film is the edge shape of the hair pattern. When the mask film together with the mold plate is embossed onto the plate cylinder, the transparent areas on both sides of the mask film can be spliced. Therefore, it can also be understood that the length of the transparent area is the same as the circumferential length of the plate cylinder. Further, when the mask film is embossed onto the plate cylinder, the length obtained by splicing the shapes of the edges of the transparent area of the mask film. As Figure 6 shown, Figure 6 For the mask film provided in the embodiment of the present invention, it can be seen that the shape presented at the junction of the transparent area and the light-shielding area is the shape of the hair pattern, and the shape on the left side of the transparent area is just complementary to the shape on the right side. When the mask film and the mold plate are embossed onto the plate cylinder together, the two sides of the transparent area will wrap around the plate cylinder for one week and be spliced together. Therefore, it can be understood that the length of the transparent area is equal to the circumference of the plate cylinder. Then, it is cured with a UV lamp. It should be noted that due to the existence of the light-shielding area, the UV light cannot irradiate the position of the mold plate corresponding to the light-shielding area, and the UV varnish here will not dry. By introducing the mask film, the use experience is improved, the situation of seams on the plate cylinder is reduced, and the authenticity of simulating hair is improved. After the embossing is completed, the processed plate cylinder is subjected to vacuum coating.

[0037] The completed seamless plate cylinder is subjected to embossing. This plate cylinder is suitable for various embossing methods such as hot embossing, extrusion embossing, and UV embossing. If it is used for UV embossing, the service life of the plate cylinder can reach more than 100,000 meters. According to different printing carriers, different film types can be made, such as label films, aluminized paper, composite papers and other diversified materials. At the end of product design, it can be transformed into labels for daily chemical products, outer box packaging, wines, food products, etc., all kinds of finished products that can be used in the printing process.

[0038] An embodiment of the present invention also discloses a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device can read the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes Figure 1 the method shown.

[0039] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order mentioned in the operation diagrams. For example, depending on the functions / operations involved, two consecutive blocks shown may actually be executed substantially simultaneously or the blocks can sometimes be executed in the reverse order. In addition, the embodiments presented and described in the flowcharts of the present invention are provided by way of example for the purpose of providing a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logical flows presented herein. Alternative embodiments are contemplated, in which the order of various operations is changed and the sub-operations described as part of a larger operation are executed independently.

[0040] In addition, although the present invention has been described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and / or features described may be integrated in a single physical device and / or software module, or one or more functions and / or features may be implemented in separate physical devices or software modules. It can also be understood that a detailed discussion of the actual implementation of each module is not necessary for understanding the present invention. Rather, considering the attributes, functions, and internal relationships of the various functional modules in the devices disclosed herein, the actual implementation of the modules will be understood within the ordinary skills of an engineer. Therefore, those skilled in the art can implement the present invention as set forth in the claims without undue experimentation. It can also be understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present invention, which is determined by the full scope of the appended claims and their equivalents.

[0041] If the above-mentioned functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., which can store program codes of various types.

[0042] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a predefined sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0043] More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion (electronic device) having one or more wirings, a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, a computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or other appropriate processing as necessary, and then storing it in a computer memory.

[0044] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

[0047] The above is a specific description of the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A method for simulating hair texture, characterized in that, Including: Constructing and splicing hairline patterns. First, design the framework of the hairline pattern, copy the texture of the hair within the framework to obtain the hairline pattern, and copy the hairline pattern so that the number of the hairline patterns is an integer multiple of the number of circumferences. Among them, any two adjacent hairline patterns are seamlessly spliced, and the number of circumferences is the number required for the hairline pattern to transfer one week on the plate cylinder; adjusting the size of the hairline pattern to be less than or equal to 200mm×200mm; Adjusting the gray scale value of the hair on the hairline pattern, where the difference in the gray scale value between any two adjacent hairs is 30 or more; Using a platinum embossing machine and a laser to perform photolithography and electroplating on the information of the hairline pattern to obtain a stamper; Stamping the pattern on the stamper onto the plate cylinder and printing the hair texture through the plate cylinder.

2. The method for simulating hair strand texture according to claim 1, wherein After adjusting the gray scale value of the hair on the hairline pattern, it further includes: Adjusting the grain angle of the hair on the hairline pattern so that the grain angles of adjacent hairs differ by 30 degrees or more.

3. The method for simulating hair strand texture according to claim 2, wherein After adjusting the grain angle of the hair on the hairline pattern, it further includes: Adjusting the gray scale value of the hair on the hairline pattern so that the gray scale values corresponding to different grain angles are different.

4. A method for simulating hair strand texture according to claim 1, characterized in that, The stamping the pattern on the stamper onto the plate cylinder and printing the hair texture through the plate cylinder includes: Fixing the stamper to a mask film, where the mask film includes a light-shielding area and a transparent area, and the length of the transparent area is equal to the circumferential perimeter of the plate cylinder.

5. A method for simulating hair strand texture according to claim 4, characterized in that, The stamping the pattern on the stamper onto the plate cylinder and printing the hair texture through the plate cylinder includes: Coating UV varnish on the stamper overlapping with the transparent area of the mask film; Stamping the pattern of the stamper onto the plate cylinder and turning on the UV lamp for curing.

6. A method for simulating hair strand texture according to claim 5, characterized in that, The stamping the pattern on the stamper onto the plate cylinder and printing the hair texture through the plate cylinder includes: Performing vacuum coating on the plate cylinder.

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