Abstract

Systems and methods for on-loom detection of faults in fabric. An image-capture trigger-mechanism triggers an imaging device to capture a first image of a section of the weaving area at a first instant during each weft insertion cycle and a second image of the section of weaving area may be captured at a second instant during each weft insertion cycle. The images may be timed to provide images of the warp yarns and the weft yarns at optimal instants during the weft insertion cycle. An image processor detects irregularities in the data received from the imaging device.

IPC Classes  ?

• D03J 1/00 - Auxiliary apparatus combined with or associated with looms
• G06T 7/00 - Image analysis
• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

Systems and methods for on-loom detection of faults in fabric. An image-capture trigger-mechanism triggers an imaging device to capture a first image of a section of the weaving area at a first instant during each weft insertion cycle and a second image of the section of weaving area may be captured at a second instant during each weft insertion cycle. The images may be timed to provide images of the warp yarns and the weft yarns at optimal instants during the weft insertion cycle. An image processor detects irregularities in the data received from the imaging device

IPC Classes  ?

• D06H 3/12 - Detecting or automatically correcting errors in the position of weft threads in woven fabrics
• G01N 21/89 - Investigating the presence of flaws, defects or contamination in moving material, e.g. paper, textiles
• D03J 1/00 - Auxiliary apparatus combined with or associated with looms
• G06T 7/00 - Image analysis

Abstract

Systems and Methods for automatic inspection of fabric comprise an imaging device for collecting images of the fabric covering a straight line on the fabric, image processing means for processing the images to detect faults. Devices include position indicating means for optically indicating positions of faults along the straight line. Position indicating means display a one-dimensional map of the straight line, having a 1:1 scale, arranged in parallel to the straight line and flush with the fabric, for indicating the position of the fault.

IPC Classes  ?

• G01N 33/36 - Textiles

Abstract

On-loom fabric inspection system (500) including an imaging device (522) configured to collect images of a weaving area (518) of a loom (502). An image-capture trigger-mechanism (529) triggers the imaging device (522) to capture images at required instants during the weaving cycle. An image processor (524) receives data from the imaging device (522) and further detects irregularities in the data.

IPC Classes  ?

• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• D03J 1/24 - Mirrors or other arrangements for inspecting loom parts
• D03D 49/00 - Details or constructional features not specially adapted for looms of a particular type
• D03D 51/44 - Automatic stop motions acting on defective operation of loom mechanisms
• G06T 7/00 - Image analysis

Abstract

System and method for on-loom fabric inspection includes an imaging device collecting images of a weaving area of a loom, a frame grabber receiving images of a fell-pick of and sending compact image data packages to an image processor. Irregularities may be detected by comparing a digital string representing the characteristic sequence of warp-risers and warp-sinkers along the fell-pick with a corresponding row (901) of required warp-risers and required warp-sinkers in a reference matrix (900) representing a required weaving pattern. The digital string may be a sequence of Boolean values.

IPC Classes  ?

• D03J 1/00 - Auxiliary apparatus combined with or associated with looms
• D03J 1/24 - Mirrors or other arrangements for inspecting loom parts
• D03D 49/00 - Details or constructional features not specially adapted for looms of a particular type
• D03D 51/18 - Automatic stop motions
• D03D 51/20 - Warp stop motions
• D03D 51/28 - Warp stop motions electrical
• D03D 51/34 - Weft stop motions
• G06T 7/40 - Analysis of texture
• G06T 7/41 - Analysis of texture based on statistical description of texture
• G06T 7/49 - Analysis of texture based on structural texture description, e.g. using primitives or placement rules
• G06T 9/20 - Contour coding, e.g. using detection of edges

Abstract

On-loom fabric inspection system (500) including an imaging device (522) configured to collect images of a weaving area (518) of a loom (502). An image-capture trigger-mechanism (529) triggers the imaging device (522) to capture images at required instants during the weaving cycle. An image processor (524) receives data from the imaging device (522) and further detects irregularities in the data.

IPC Classes  ?

• D03J 1/24 - Mirrors or other arrangements for inspecting loom parts
• D03D 49/00 - Details or constructional features not specially adapted for looms of a particular type
• D03D 51/44 - Automatic stop motions acting on defective operation of loom mechanisms
• G06T 7/00 - Image analysis
• H04N 5/225 - Television cameras
• H04N 5/232 - Devices for controlling television cameras, e.g. remote control

Abstract

An on-loom fabric inspection system having at least one imaging device configured to collect images of at least one section of a weaving area of a loom including a shed region, a woven fabric region and a fell region. The system is operable to detect faults in the weaving area and to produce batches of woven fabric assigned with an objective quality index.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• D03J 1/00 - Auxiliary apparatus combined with or associated with looms

Abstract

On-loom fabric inspection system to identify weaving faults during the process of fabric manufacture thereby enabling early detection or prevention of fabric defects. A method for continuous monitoring of woven textiles during production and an objective standard for quality control of such fabrics.

IPC Classes  ?

• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• D03J 1/00 - Auxiliary apparatus combined with or associated with looms