# US 2021/0274874 A1 · Computer-implemented method, determination system, computer program and electronically readable storage medium for determining production values for producing a custom-tailored knitted garment

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- Number: US 2021/0274874 A1
- Document ID: US20210274874A1
- Status: Published application
- Kind: A1
- Application number: 17/196,287
- Filed: 2021-03-09
- Published: 2021-09-09
- Earliest claimed: 2020-03-09
- Assignees: Medi GmbH & Co. KG
- Applicants: Medi GmbH & Co KG
- Inventors: Jan ATMANSPACHER; Wolfgang TANNEBAUM
- Web page: https://patentgrep.com/patent/US20210274874A1

## CPC

- A61B 5/6898: {Portable consumer electronic devices, e.g. music players, telephones, tablet computers}
- G06T 17/10: Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes
- A61B 5/0064: {Body surface scanning}
- A61B 5/1072: {measuring distances on the body, e.g. measuring length, height or thickness (A61B5/1076 takes precedence)}
- A61B 5/1073: {Measuring volume, e.g. of limbs}
- A61B 5/1079: {using optical or photographic means}
- A61B 5/7267: {involving training the classification device}
- A61F 13/08: Elastic stockings; for contracting aneurisms
- D04B 1/265: {Surgical stockings (of unspecified knit construction and reinforced A41B11/02; of unspecified knit construction and elastic A61F13/08)}
- D04B 37/02: with weft knitting machines
- G05B 2219/45194: Lace, braid, knitting
- G06T 2207/30124: Fabrics; Textile; Paper
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- D04B: KNITTING
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

Computer-implemented method for determining production values for producing a custom-tailored, in particular skin-tight, knitted garment (31) for a limb (3) of a person, comprising the steps of receiving a three-dimensional dataset (11) of the limb (3) acquired using a 3D scan device (21), receiving at least one height value describing the dimension of a knitting row (9) in the lengthwise direction of the limb (3) and at least one total length value for at least one lengthwise section (4) of the garment (31) and determining a number of knitting rows (9) for the at least one section (4) of the garment (31) by dividing the total length value by the height value, evaluating the three-dimensional dataset (11) to derive a circumference information describing the circumference of the limb (3) along at least the length of the limb (3) covered by the at least one section (4), from the circumference information, determining a circumference value for each n-th knitting row (9) or each knitting row (9) except every n-th knitting row (9), wherein n is a natural number, in the at least one section (4), wherein the circumference values are used as and/or for deriving production values for the knitted garment (31).

## Claims

### Claim 1

Computer-implemented method for determining production values for producing a custom-tailored, in particular skin-tight, knitted garment (31) for a limb (3) of a person, comprising the steps of
receiving a three-dimensional dataset (11) of the limb (3) acquired using a 3D scan device (21),
receiving at least one height value describing the dimension of a knitting row (9) in the lengthwise direction of the limb (3) and at least one total length value for at least one lengthwise section (4) of the garment (31) and determining a number of knitting rows (9) for the at least one section (4) of the garment (31) by dividing the total length value by the height value,
evaluating the three-dimensional dataset (11) to derive a circumference information describing the circumference of the limb (3) along at least the length of the limb (3) covered by the at least one section (4),
from the circumference information, determining a circumference value for each n-th knitting row (9) or each knitting row (9) except every n-th knitting row (9), wherein n is a natural number, in the at least one section (4),
wherein the circumference values are used as and/or for deriving production values for the knitted garment (31).

### Claim 2 (depends on 1)

Method according to claim 1, characterised in that the circumference information comprises multiple scan values (14) for the circumference in each height value interval (10) corresponding to a knitting row (9) along the lengthwise direction, wherein the circumference value for a knitting row (9) is determined from the multiple scan values (14) in the corresponding height value interval by statistical evaluation, in particular as a mean or a maximum or a minimum of the scan values (14).

### Claim 3 (depends on 1)

Method according to claim 1, characterised in that a number of stitches and/or a stitch width and/or at least one weft property, in particular a weft pretension and/or a weft amount for each knitting row (9) is determined from the circumference values as production values.

### Claim 4 (depends on 1)

Method according to claim 1, characterised in that a smoothing filter is applied to the circumference information and/or the circumference values in the lengthwise direction.

### Claim 5 (depends on 1)

Method according to claim 1, characterised in that at least one optics adaptation criterion is applied to at least a part of the circumference values and/or values derived therefrom in the lengthwise direction, wherein, if at least one of the at least one optics adaptation criterion is fulfilled, at least one circumference value and/or derived value is adapted and/or at least one further production value is chosen according to a rule associated with the fulfilled optics adaptation criterion.

### Claim 6 (depends on 5)

Method according to claim 5, characterised in that at least one of the at least one optics adaptation criterion evaluates a, in particular local, slope of the circumference values and/or derived values, in particular by comparing with at least one threshold value, and/or a local shape resulting from the circumference values and/or derived values, in particular regarding the presence of local indentations (16), and/or compares the circumference values with at least one comparison curve.

### Claim 7 (depends on 5)

Method according to claim 5, characterised in that the further production values describe the amount of weft threads and/or the pretension of at least one thread and/or a stitch number and/or a stitch size and/or the presence of at least one partial knitted row (9).

### Claim 8 (depends on 1)

Method according to claim 1, characterised in that at least one artificial intelligence optics adaptation algorithm is applied to at least a part of the circumference values and/or values derived thereof in the lengthwise direction for adapting at least one production value regarding the optical impression of the garment (31).

### Claim 9 (depends on 5)

Method according to claim 5, characterised in that at least one optics adaptation criterion has been defined and/or the optics adaptation algorithm has been trained based on complaint data regarding returned garments.

### Claim 10 (depends on 1)

Method according to claim 1, characterised in that the positions of the circumference values are chosen to encompass at least one measurement position defined by a standard, in particular RAL, and/or at least one additional circumference value is determined at at least one additional measurement position defined by a standard, in particular RAL.

### Claim 11 (depends on 1)

Method according to claim 1, characterised in that the garment (31) is a compression garment (31), wherein a tension value is calculated from each circumference value as a skin value.

### Claim 12 (depends on 1)

Method for producing a custom-tailored knitted garment (31) for a limb (3) of a person, comprising automatically performing the steps of a method according to claim 1, whereafter the knitted garment (31) is automatically produced by a garment production apparatus, in particular a knitting machine (30), using the determined production values.

### Claim 13

Determination system (18) for determining production values for producing a custom-tailored, in particular skin-tight, knitted garment (31) for a limb (3) of a person, comprising:
a first interface (20) for receiving a three-dimensional dataset (11) of the limb (3) acquired using a 3D scan device (21),
a second interface (23) for receiving at least one height value describing the dimension of a knitting row (9) in the lengthwise direction of the limb (3) and at least one total length value for at least one lengthwise section (4) of the garment (31),
a first determination unit (25) for determining a number of knitting rows (9) for the at least one section (4) of the garment (31) by dividing the total length value by the height value,
an evaluation unit (26) for evaluating the three-dimensional dataset (11) to derive a circumference information describing the circumference of the limb (3) along at least the length of the limb (3) covered by the at least one section (4),
a second determination unit (27) for determining, from the circumference information, a circumference value for each n-th knitting row (9) or each knitting row (9) except every n-th knitting row (9), wherein n is a natural number, in the at least one section (4),
a third interface (29) for providing the circumference values and/or for production values derived therefrom.

### Claim 14 (depends on 1)

Computer program, which performs the steps of a method according to claim 1 when the computer program is executed on a computing device, in particular of a determination system (18).

### Claim 15 (depends on 14)

Electronically readable storage medium, on which a computer program according to claim 14 is stored.