Embodiments of the present invention relate to hand sewing needles that have periodic markings to facilitate the creation of stitches of equal length and spacing. Because regular stitching can be difficult to produce by hand but is nevertheless necessary for a garment or other sewing product to be considered of quality, presentable, and professionally made, embodiments of the invention aid those with little sewing experience in producing regular stitching. Embodiments of the present invention also relate to methods for producing and using the disclosed hand sewing needle.

An aspect of the present invention is a sewing system which includes a sewing machine that sews a workpiece, and a three-dimensional measurement device that measures a three-dimensional shape of the workpiece. According to an aspect of the present invention, it is possible to appropriately implement quality control of a product produced by sewing.

Systems, devices and methods for constructing a quilt from a plurality of quilt blocks are described herein. The devices include a flat body having a front planar surface and a rear planar surface that contacts a fabric when in use, the flat body including: a back/sash template for measuring and cutting a back piece of each quilt block; and a centering guide for indicating where quilt blocks in different rows of the quilt will align.

An embroidery sewing machine calculates the number of designs to be used for sewing for a length that is closest to a desired sewing length, based on the desired sewing length and information regarding the designs. The embroidery sewing machine calculates the sewing length based on the calculated number of designs and the information regarding the designs. Furthermore, the embroidery sewing machine adjusts the length of each design such that the calculated sewing length matches the desired sewing length, and converts the adjusted data of the designs into embroidery data. This enables sewing such that the sewing start and end points match each other or junction matching is secured, even in a case of sewing in the form of various kinds of combinations of curves and lines or the like. In addition, this provides an embroidery sewing machine that is capable of executing sewing with an improved appearance.

A method of generating an image that shows an embroidery area in an embroidery frame for computerized embroidery includes: acquiring a first image of a calibration board that has multiple feature points forming a contour approximating an embroidery area defined by the embroidery frame; identifying the feature points of the calibration board in the first image to acquire multiple graphical feature points; acquiring a geometric curved surface that fits the graphical feature points and that includes multiple curved surface points; acquiring a second image in which the embroidery area of the embroidery frame is shown; and performing image correction on the second image based on the geometric curved surface to generate a corrected image.

A appliqu method includes: acquiring a first image of a first fabric piece; performing edge detection on the first image to acquire a plurality of edge points of the first fabric piece; calculating, for each of the edge points, coordinates of the edge point in a coordinate system corresponding to a computerized embroidery machine; and embroidering the first fabric piece onto a second fabric piece along an embroidering path formed by the coordinates of the edge points in the coordinate system.

Systems and methods relate generally to textile patch attachment to a textile material. In an example, a method relating generally to textile patch attachment to a textile material is disclosed. In such a method, design and coloring of a textile patch and the textile material is detected. This detection includes: capturing images of the textile patch and the textile material with a camera; sending the images to a programmed computer system in communication with the camera for image processing; determining thickness and colors of the textile patch and the textile material from the image processing of the images; and determining position of the textile patch relative to a pattern of the textile material from the image processing of the images. After the detecting, data obtained from the detecting is displayed on a display screen of the programmed computer system.

A appliqu method includes: acquiring a first image of a first fabric piece; performing edge detection on the first image to acquire a plurality of edge points of the first fabric piece; calculating, for each of the edge points, coordinates of the edge point in a coordinate system corresponding to a computerized embroidery machine; and embroidering the first fabric piece onto a second fabric piece along an embroidering path formed by the coordinates of the edge points in the coordinate system.

A method of generating an image that shows an embroidery area in an embroidery frame for computerized embroidery includes: acquiring a first image of a calibration board that has multiple feature points forming a contour approximating an embroidery area defined by the embroidery frame; identifying the feature points of the calibration board in the first image to acquire multiple graphical feature points; acquiring a geometric curved surface that fits the graphical feature points and that includes multiple curved surface points; acquiring a second image in which the embroidery area of the embroidery frame is shown; and performing image correction on the second image based on the geometric curved surface to generate a corrected image.

An aspect of the present invention is a sewing system which includes a sewing machine that sews a workpiece, and a three-dimensional measurement device that measures a three-dimensional shape of the workpiece. According to an aspect of the present invention, it is possible to appropriately implement quality control of a product produced by sewing.