COMPUTER IMPLEMENTED METHODS FOR GENERATING 3D GARMENT MODELS
20230200477 · 2023-06-29
Assignee
Inventors
Cpc classification
G06V20/647
PHYSICS
A41H3/007
HUMAN NECESSITIES
International classification
Abstract
The invention relates to computer implemented methods for generating a garment finish preset comprising assembly instructions for a garment finish for a garment to be fabricated, for automatically generating a garment finish preset comprising assembly instructions for a garment finish for a garment to be fabricated, and for automatically determining at least one candidate from a plurality of garment finish presets, each of said garment finish presets comprising assembly instructions for a garment finish for a garment to be fabricated from garment panels.
Claims
1. A computer implemented method, with program code being stored on a machine readable medium for automatically generating a 3D garment model representing a garment to be fabricated from garment panels, the computer implemented method comprising: providing one or more documents comprising a plurality of 2D pattern pieces representing the garment panels; determining with a pattern recognition algorithm: a garment type indicator for at least one of the 2D pattern pieces, the garment type indicator representing a type of a garment that the respective first garment panel belongs to and being one of a plurality of garment type indicators stored on the machine readable medium; and a panel pose indicator for each of the 2D pattern pieces, the panel pose indicator representing an estimated position and an estimated orientation of the respective garment panel within the garment; and generating the 3D garment model based on the 2D pattern pieces, the at least one garment type indicator, and the panel pose indicators.
2. The computer implemented method according to claim 1, further comprising adding default finishes to the 3D garment model based on at least one of the at least one garment type indicator and the panel pose indicators.
3. The computer implemented method according to claim 1, further comprising generating a 2D panel model for each of the 2D pattern pieces, wherein generating the 3D garment model is based on draping a reference object with the 2D panel models.
4. The computer implemented method according to claim 3, further comprising: positioning and orienting the 2D panel models based on the panel pose indicators, while, before, or after positioning and orienting the 2D panel models, shaping each of the 2D panel models into 3D panel models so as they adapt to a shape of the reference object based on the at least one garment type indicator, and the panel pose indicators, and generating the first 3D garment model by virtually assembling the 3D panel models along their respective edges.
5. The computer implemented method according to claim 1, wherein for determining a garment type indicator and the panel pose indicator, the pattern recognition algorithm is configured for analyzing at least one of: a shape of the 2D pattern piece, a proportion of the 2D pattern piece relative to the other 2D pattern pieces, textual information associated with the 2D pattern piece in the respective document, whether the 2D pattern piece is at least in part symmetrical or not, and an amount of provided 2D pattern pieces.
6. A computer implemented method, with program code being stored on a machine readable medium for virtually finishing a 3D garment model representing a garment to be fabricated without finishes or with default finishes, the computer implemented method comprising: providing the 3D garment model; providing one or more documents comprising human-readable garment finishing instructions for finishing the garment; determining with an extraction algorithm at least one garment finish feature from the one or more documents, the garment finish feature corresponding to an additional garment component or a garment property and being indicative for a position and an orientation of the respective additional garment component or garment property within the garment; and virtually finishing the 3D garment model based on the determined at least one garment finish feature.
7. The computer implemented method according to claim 6, wherein virtually finishing the second 3D garment model comprises modifying at least a part of the 3D garment model.
8. The computer implemented method according to claim 7, the garment finish feature corresponding to a fabric type of at least part of the 3D garment model, wherein modifying the at least a part of the 3D garment model comprises attributing at least one of a texture and a color to at least part of the 3D garment model based on the garment finish feature.
9. The computer implemented method according to claim 7, the garment finish feature corresponding to seams of the garment, wherein modifying at least a part of the 3D garment model comprises attributing at least one of a thread color, a thread type, and a stitch pattern to seams of the garment.
10. The computer implemented method according to claim 6, wherein virtually finishing the 3D garment model comprises adding at least one garment finish model to the 3D garment model.
11. The computer implemented method according to claim 10, the garment finish feature corresponding to seams of the garment, wherein the at least one garment finish model represents stitches to be placed at dedicated locations within the garment.
12. The computer implemented method according to claim 10, the garment finish feature corresponding to bindings of the garment, wherein the at least one garment finish model represents hems to be placed at openings of the garment.
13. The computer implemented method according to claim 10, the garment finish feature corresponding to a closure of the garment, wherein the at least one garment finish model represents at least one of: a button, a buttonhook, a snap fastener, a zipper, a touch fastener, a magnetic fastener, a hook, a loop for a hook or a button, a cord fastener, and laces.
14. The computer implemented method according to claim 6, wherein for determining the at least one garment finish feature, the extraction algorithm is configured for analyzing the one or more documents with respect to at least one of: textual information, image data, arrows, size data, color swatches, color indicators, stitch types, and stitch designations.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0098] By way of example only, preferred embodiments of the invention will be described more fully hereinafter with reference to the accompanying figures, wherein:
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DETAILED DESCRIPTION OF THE DRAWINGS
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[0111] With the first method it is therefore proposed to provide one or more first documents 1 which comprise a plurality of first 2D pattern pieces 2 that represent those the first garment panels. These documents could be a Computer Aided Design (CAD) file, a Portable Document Format (PDF) file, an image file in any format, or any other file containing computer-readable or human-readable 2D shapes of pattern pieces. In the shown example, the 2D pattern document 1 contains representations of the front and back panels of a T-shirt (3 and 4), the sleeve panels 5 and 6, and a neck binding (or neck tape) 7.
[0112] According to the invention, a garment type indicator for at least one of the first 2D pattern pieces 2 is determined with a pattern recognition algorithm. The garment type indicator represents a type of a garment that the respective first garment panel(s) belong(s) to. In this case, the pattern recognition algorithm detects that this document 1 belongs to a T-shirt because a typically shaped panel and/or a typical collection of typically shaped panels was detected.
[0113] The determined garment type indicator is one of a plurality of garment type indicators stored on the machine readable medium. For example, the garment type indicators can refer to the type of garment on a very basic level, like a T-shirt, pants, underwear, etc., but it can alternatively or additionally also refer to the type of garment on a more detailed level, like long-sleeved shirt or short-sleeved shirt, ladieswear or menswear, dressed or denim, suit pants or 5-pocket, etc.
[0114] Furthermore, a panel pose indicator is determined with the pattern recognition algorithm for each of the first 2D pattern pieces. The panel pose indicator represents an estimated position and an estimated orientation of the respective garment panel within the first garment. For example, the algorithm will identify a panel with the shape of the back piece 4 to be located in the back with the long straight line at the bottom. It will further identify the front piece 3 to be located in the front but turned around such that again the long straight line is at the bottom and the neck part in the top. The first 3D garment model is now generated based on the first 2D pattern pieces, the at least one garment type indicator, and the panel pose indicators.
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[0116] According to what is shown in
[0117] According to what is shown in
[0118] The first 3D garment model 13 is shown on a transparent avatar 12, but the reference object can also be a garment hanger or any other holder that presents the garment in such a way that a designer can easily work on the garment design in a CAD environment. The reference object can be two- or three-dimensional.
[0119] In summary, the first method may further comprise said positioning and orienting of the first 2D panel models 8 based on the panel pose indicators, in particular further based on based on a proportion of the first 2D pattern pieces 2 relative to each other. If also said proportion is taken into account, then the panels can be positioned and oriented already quite closely to each other (because the general size of the garment can be estimated) such that the rendering of the assembly is made more efficient.
[0120] While, before, or after said positioning and orienting the 2D panel models 8, the first method may include shaping each of the first 2D panel models 8 into first 3D panel models 11 so as they adapt to a shape of the reference object 13 (in the respective area) based on the at least one garment type indicator, and the panel pose indicators. Thus, according to a respective garment type indicator (in this case: a T-shirt), the first method may take into account information (which may be stored on the computer-readable medium) about the typical 3D shape of the respective panel.
[0121] Eventually, the first 3D garment model 13 is generated by virtually assembling the first 3D panel models 11 (which are the shaped first 2D panel models 8) along their respective edges. In particular, the first 2D or 3D panel models are virtually stitched together a default allowance away from the edges, wherein models of default seams can be provided at the virtual stitch lines.
[0122] In general, the first method may provide adding default finishes to the first 3D garment model based on the respective garment type indicator and/or the panel pose indicators. For example, in the awareness that the present garment is a T-shirt, the first 3D garment model 10/13 might be equipped with standard French seams, wherein in case of a jeans the method might equip the first 3D garment model with a standard lapped seam.
[0123] In an embodiment of the first computer implemented method, for determining a garment type indicator and the panel pose indicator, the pattern recognition algorithm is configured for analyzing at least one of (a) a shape of the 2D pattern piece, (b) a proportion of the 2D pattern piece relative to the other 2D pattern pieces, (c) textual information associated with the 2D pattern piece in the respective first document, (d) whether the 2D pattern piece is at least in part symmetrical or not, and (e) an amount of provided 2D pattern pieces.
[0124] A particular advantage of said first method is that the first 3D garment model is fully automatically generated without the need of manual intervention, based on merely the at least one first document with its depiction or description of the first 2D pattern pieces that represent the first garment panels from which the first garment is to be fabricated.
[0125] The first method, in particular the pattern recognition algorithm, may be trainable based on machine learning using training data from previous first 3D garment model generations. Specifically, such a machine learning algorithm can “learn” from user input that is aimed at correcting the automatic choices made by the computer.
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[0127] With the second method it is therefore proposed to provide said second 3D garment model that has no or only default finishes and to further provide one or more second documents which comprise human-readable garment finishing instructions for finishing the second garment. One exemplary such document 14, often referred to as “Tech Pack” among experts, is shown in
[0128] The second method provides an extraction algorithm that is configured to determine at least one such garment finish feature from the one or more second documents. Said garment finish feature corresponds to an additional garment component and/or a garment property, and is indicative for a position and an orientation of the respective additional garment component or garment property within the second garment. Therefore, the extraction algorithm specifically extracts all the information necessary to finish the garment as is provisioned in the second document(s). In particular, the extraction algorithm is configured to interpret the human-readable instructions and illustrations to establish the garment finish features.
[0129] The second 3D garment model is then virtually finished based on the determined at least one garment finish feature. Specifically, the second method may retrieve stored elements (e.g. 3D models of zippers or 2D models of seams) and/or model appearances (texture, color, etc.) in order to modify the second 3D garment model 21 (see
[0130] If the garment finish feature corresponds to seams of the second garment (see for example reference 18), the at least part of the second 3D garment model is modified by attributing at least one of a thread color, a thread type, and a stitch pattern to seams of the second garment.
[0131] Virtually finishing the second 3D garment model 21 may as mentioned also comprise adding at least one garment finish model to the second 3D garment model. For example, as shown in
[0132] If the garment finish feature corresponds to seams of the second garment, the at least one garment finish model may represent stitches to be placed at dedicated locations within the second garment, see reference 15, 16, and 18 in
[0133] In an embodiment of the second computer implemented method, the garment finish feature may also correspond to a closure of the garment (not the case in the shown example), wherein the at least one garment finish model represents at least one of a button, a buttonhook, a snap fastener, a zipper, a touch fastener, a magnetic fastener, a hook, a loop for a hook or a button, a cord fastener, and laces.
[0134] Specifically, for determining the at least one garment finish feature, the extraction algorithm may be configured for analyzing the one or more second document 14 with respect to at least one of: textual information 15-19, image data, arrows, size data 20, color swatches 17, color indicators, stitch types, and stitch designations. The algorithm may be trained to search the second document(s) 14 for keywords, known patterns in describing a garment finish feature, arrows (especially the alignment of arrows), numeric values (especially typical number ranges), and so on.
[0135] Specifically, the second 3D garment model 21 may be an assembly of a plurality of second 3D pattern pieces representing second garment panels that the second garment is to be fabricated from, i.e. just as it is established as first 3D garment model by the first method described above. This first 3D garment model lacks finishes or is equipped with default finishes because it is based on the first 2D pattern pieces comprised by the first document which is usually silent about how the panels are to be assembled.
[0136] In a special embodiment, the third method as presented herein is a combination of the first and second method. However, more generally speaking, the purpose of the third method is to automatically generate a plurality of third 3D garment models in a batch process, each third 3D garment model representing a third garment to be fabricated from third garment panels. According to the third method, for each third 3D garment model to be generated, one or more third documents are provided. Said third document(s) comprise(s) a plurality of third 2D pattern pieces representing the third garment panels and human-readable garment finishing instructions for finishing the third garment. Hence, just as for the assembly process in reality, the garment patterns and corresponding instructions (“Tech Pack”) are provided.
[0137] The patterns of the third 2D pattern pieces are then automatically recognized, based on which a fourth 3D garment model is generated. From the human-readable garment finishing instructions, at least one garment finish feature is extracted, based on which third 3D garment model is generated by virtually finishing each of the fourth 3D garment models. Even if the nomenclature suggests otherwise, the fourth 3D garment model is a “work-in-progress” and is predecessor to the third 3D garment model.
[0138] After a plurality of third 3D garment models have been batch-processed, a report is generated which is indicative for at least one of: (i) could all third documents be translated into fourth 3D garment models? (ii) specifically which of the fourth 3D garment models could be generated? (iii) with what level of confidence (likelihood of correctness) was each of the fourth 3D garment models generated? (iv) specifically which of the fourth 3D garment models could not be generated? (v) which of the fourth 3D garment models could be generated only in part and to what extent (e.g. what part is missing)? (vi) could a third 3D garment model be generated from each of the fourth 3D garment models? (vii) which of the third 3D garment models could be generated? (viii) with what level of confidence (likelihood of correctness) was each of the third 3D garment models generated? (ix) which of the third 3D garment models could not be generated? and (x) which of the third 3D garment model could be generated only in part and to what extent (what part or feature is missing)?
[0139] The report may be used by a user to quickly find out about the unsuccessful or partly successful conversions in order to manually correct the respective models or give feedback to the computer (e.g. by confirming or rejecting the respective part of the report). The report and/or the manual corrections/user feedback may be used to further improve or train the pattern recognition, the extraction, and/or the virtual panel assembly.
[0140] Specifically, recognizing the patterns of the third 2D pattern pieces may be based on determining, with a pattern recognition algorithm, a garment type indicator for at least one of the third 2D pattern pieces and a panel pose indicator for each of the third 2D pattern pieces. Generating the fourth 3D garment model is further based on the garment type indicator and the panel pose indicator.
[0141] Said garment type indicator represents, or in other words: is indicative for, a type of a garment that the respective third garment panel belongs to. The garment type indicator may be selected from a plurality of garment type indicators stored on the machine readable medium. Said panel pose indicator representing, or in other words: is indicative for, an estimated or preliminary position and an estimated or preliminary orientation of the respective garment panel within the third garment.
[0142] Furthermore, the extraction of the at least one garment finish feature may be based on determining, with an extraction algorithm, the at least one garment finish feature from the one or more third documents, in particular from the human-readable garment finishing instructions for finishing the third garment. The garment finish feature corresponds to an additional garment component or a garment property and represents, or in other words: is indicative for, a position and an orientation of (a) the respective additional garment component or (b) the respective garment property within the third garment.
[0143] For determining the at least one garment finish feature, the extraction algorithm may be configured for analyzing the one or more third documents, in particular the human-readable garment finishing instructions for finishing the third garment, with respect to at least one of: textual information, image data, arrows, size data, color swatches, color indicators, stitch types, and stitch designations.
[0144] The one or more third documents that correspond to a single garment (for which the third 3D garment model is to be generated) may in particular be so-called “Tech Packs” with corresponding 2D patterns and assembly instructions. This could all be combined in one file or document, however, it may also be provided as two or more correlated files or documents.
[0145] It is noted that the text in
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[0150] Referring to
[0151] The newly created garment finish preset 40 can also be automatically displayed to support the user in deciding what finish it is and if every information available in the document was (correctly) interpreted by the extraction algorithm. To check every aspect of it (e.g. the buttons on the backside), the model 40 of the finish may be configured to be three-dimensionally rotatable in the virtual 3D environment. It is possible that, such as in the shown case, one single document contains more than one finish instruction (see the chest pocket next to the cuff). The extraction algorithm is particularly configured to distinguish between a plurality of different finishes and associate the available data correctly.
[0152] The extraction algorithm specifically extracts finish features from the drawing based on which the single finish parts of the finish are identified and used to virtually assemble the whole finish. The extraction algorithm may further be configured to identify, or interpret the garment finish features to determine a position and an orientation of the finish that it usually occupies within a garment.
[0153] In particular, when a preset is recorded for example like it was explained with
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[0156] Finally,
[0157] Generally, according to at least some aspects of the present invention, a garment finish presets (generated in whatever way) can be suggested to a designer, i.e. a user of the virtual 3D environment of a garment design software, based on its suitability with a 3D garment model already at hand, or a 2D pattern set representing the panels that the respective garment is to be fabricated from.
[0158] The garment finish preset may be understood as a set of macros that can be applied across garments. In order to find out if one of a plurality of garment finish presets stored in a library is suitable for a present garment, the features of said garment shall be identified. That may include, but is not limited to, pieces types and segments types, e.g. based on detected outside boundaries.
[0159] In particular, the garment (which is either at hand already in 3D shape or to be assembled based on 2D pattern pieces) comprises parameters or “tags”, that for example represent the existence of at least one of openings, other links, dimensions, locations of a specific feature, names, typical features that may be added at a specific location, garment category, etc.
[0160] Specifically, an indicator for the type of garment and an indicator for the type of the panels that the garment is comprised of are identified and based on the identified indicators, a list of suggested, likely suitable presets (candidates) is generated. For example, identifying a T-shirt and that the T-shirt has a short-arm sleeve, the software would present as a candidate garment finish preset a seam pattern for the shoulder area and for the hem of the sleeve. The identification algorithm would further identify the neck opening and thus trigger the suggestion of a neck binding, and so on.
[0161] It is highly likely that more than just one “candidate” for a suitable garment finish preset is found, which is why the computer implemented method may further provide a list of priorities, or a “ranking” so to speak, that provides a plurality of garment finish presets sorted after the likelihood of suitability, which may be derived by analyzing how many requirements are fulfilled in view of the garment at hand.
[0162] But the garment finish features contained by the suggestion list do not necessarily compete. For example, if the garment is identified as a shirt, it is determined that e.g. pockets, collars, cuff, neck binding, and slits are indeed suitable to be added to the garment. These finishes (pocket, collar, cuff, neck binding, slits) are detected based on said tags or parameters, i.e. each of the corresponding garment finish presets has a group of counter-parameters, and each group of these counter-parameters has an overlap with the group of parameters of the shirt model (or shirt pattern pieces). For each identified suitable garment finish preset (pocket, collar, cuff, neck binding, slits), one or more differently styled preset may be suggested. For that, even an analysis of style, shape, color, or cloth type me be undertaken to generate a list of priorities.
[0163] In any case, upon selecting a garment finish preset to be added or applied to a garment loaded into the virtual 3D environment, in accordance with embodiments, the parts contained by the preset are automatically resized (in particular also reshaped) to fit the places where they are added to the garment (e.g. the opening in case of a collar or cuff).
[0164] In case only a set of 2D pattern pieces is loaded (either only in the background, or indeed loaded into the virtual 3D environment), a garment finish preset may also refer to a more basic set of assembly instructions, e.g. a specific way how to sew the pieces of a T-shirt together. All information necessary to do so (type of sewing thread, color, type of seam, type of hems, etc.) are stored in the preset and automatically applied in the correct order to the T-shirt panels.
[0165] In particular embodiments, the garment finish features stored in the library can be understood as “user defined finishes” comprised of a reusable list of commands (like a macro) that allow the user to assemble a portion of the garment using a series of commands. The commands are things like: “fold a piece”, “place a piece relative to another piece in this way”, “sew two segments together”, “create a piece of a certain size”, “add a slit to a piece”, “invert a piece”, etc. These commands or instructions can be executed to assemble or adjust a finish on the garment model. The garment finish presets mirror the steps to some degree of the actual assembly of the garment component and can be applied to all garments that are identified to be suitable. For this identification, each piece and each segment (a continuous portion of the boundary), each drill point, notch point, and internal line may be given unique identifiers (parameters) that work across all similar garments. The orientation that a piece is to adapt should be consistent (for example a pocket bag), i.e. if e.g. a piece is folded according to a preset, the fold instruction has to assume the piece being oriented consistently so the fold will work the same way on all similar garments or pieces.
[0166] In other words, with the present invention, a new “language” is proposed that make predefined finishes “comprehensible” and applicable to a plurality of other same or similar type garments.
[0167] Although the invention is illustrated above, partly with reference to some preferred embodiments, it must be understood that numerous modifications and combinations of different features of the embodiments can be made. All of these modifications lie within the scope of the appended claims.