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公开(公告)号：US11810314B2
公开(公告)日：2023-11-07
申请号：US17745087
申请日：2022-05-16
申请人： Cognex Corporation
发明人： Nitin M. Vaidya , Hongwei Zhu , Daniel Moreno , Ben R. Carey , Nickolas J. Mullan , Gilbert Chiang , Yukang Liu , David J. Michael
CPC分类号： G06T7/62 , G06T7/64 , G06T2200/24 , G06T2207/10012
摘要： A system and method for estimating dimensions of an approximately cuboidal object from a 3D image of the object acquired by an image sensor of the vision system processor is provided. An identification module, associated with the vision system processor, automatically identifies a 3D region in the 3D image that contains the cuboidal object. A selection module, associated with the vision system processor, automatically selects 3D image data from the 3D image that corresponds to approximate faces or boundaries of the cuboidal object. An analysis module statistically analyzes, and generates statistics for, the selected 3D image data that correspond to approximate cuboidal object faces or boundaries. A refinement module chooses statistics that correspond to improved cuboidal dimensions from among cuboidal object length, width and height. The improved cuboidal dimensions are provided as dimensions for the object. A user interface displays a plurality of interface screens for setup and runtime operation.
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2.发明公开公开(公告)号：US20240177260A1
公开(公告)日：2024-05-30
申请号：US18242192
申请日：2023-09-05
申请人： Cognex Corporation
发明人： Ben R. Carey , Andrew Parrett , Yukang Liu , Gilbert Chiang
CPC分类号： G06T1/0014 , G06T7/0004 , G06T7/251 , G06T7/292 , G06T7/85 , G06V20/64 , G06V2201/12
摘要： This invention provides a system and method for using an area scan sensor of a vision system, in conjunction with an encoder or other knowledge of motion, to capture an accurate measurement of an object larger than a single field of view (FOV) of the sensor. It identifies features/edges of the object, which are tracked from image to image, thereby providing a lightweight way to process the overall extents of the object for dimensioning purposes. Logic automatically determines if the object is longer than the FOV, and thereby causes a sequence of image acquisition snapshots to occur while the moving/conveyed object remains within the FOV until the object is no longer present in the FOV. At that point, acquisition ceases and the individual images are combined as segments in an overall image. These images can be processed to derive overall dimensions of the object based on input application details.
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公开(公告)号：US11966996B2
公开(公告)日：2024-04-23
申请号：US17173032
申请日：2021-02-10
申请人： Cognex Corporation
发明人： Gang Liu , Ben R. Carey , Nickolas J. Mullan , Caleb Spear , Andrew Parrett
CPC分类号： G06T1/0014 , G06T7/0004 , G06T7/507 , G06T7/521 , G06T7/85 , G06V20/64 , G06T2207/10028 , G06V2201/12
摘要： This invention provides a system and method that performs 3D imaging of a complex object, where image data is likely lost. Available 3D image data, in combination with an absence/loss of image data, allows computation of x, y and z dimensions. Absence/loss of data is assumed to be just another type of image data, and represents the presence of something that has prevented accurate data from being generated in the subject image. Segments of data can be connected to areas of absent data and generate a maximum bounding box. The shadow that this object generates can be represented as negative or missing data, but is not representative of the physical object. The height from the positive data, the object shadow size based on that height, the location in the FOV, and the ray angles that generate the images, are estimated and the object shadow size is removed from the result.
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4.发明授权公开(公告)号：US11748838B2
公开(公告)日：2023-09-05
申请号：US17179294
申请日：2021-02-18
申请人： Cognex Corporation
发明人： Ben R. Carey , Andrew Parrett , Yukang Liu , Gilbert Chiang
CPC分类号： G06T1/0014 , G06T7/0004 , G06T7/251 , G06T7/292 , G06T7/85 , G06V20/64 , G06V2201/12
摘要： This invention provides a system and method for using an area scan sensor of a vision system, in conjunction with an encoder or other knowledge of motion, to capture an accurate measurement of an object larger than a single field of view (FOV) of the sensor. It identifies features/edges of the object, which are tracked from image to image, thereby providing a lightweight way to process the overall extents of the object for dimensioning purposes. Logic automatically determines if the object is longer than the FOV, and thereby causes a sequence of image acquisition snapshots to occur while the moving/conveyed object remains within the FOV until the object is no longer present in the FOV. At that point, acquisition ceases and the individual images are combined as segments in an overall image. These images can be processed to derive overall dimensions of the object based on input application details.
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公开(公告)号：US11605177B2
公开(公告)日：2023-03-14
申请号：US16437241
申请日：2019-06-11
申请人： Cognex Corporation
发明人： Ben R. Carey , Nickolas J. Mullan , Gilbert Chiang , Yukang Liu , Nitin M. Vaidya , Hongwei Zhu , Daniel Moreno , David J. Michael
IPC分类号： G06T7/62 , G06T7/64 , G06F3/04847 , H04N13/296 , H04N5/235 , H04N13/361 , G06V20/64 , H04N13/00
摘要： A system and method for estimating dimensions of an approximately cuboidal object from a 3D image of the object acquired by an image sensor of the vision system processor is provided. An identification module, associated with the vision system processor, automatically identifies a 3D region in the 3D image that contains the cuboidal object. A selection module, associated with the vision system processor, automatically selects 3D image data from the 3D image that corresponds to approximate faces or boundaries of the cuboidal object. An analysis module statistically analyzes, and generates statistics for, the selected 3D image data that correspond to approximate cuboidal object faces or boundaries. A refinement module chooses statistics that correspond to improved cuboidal dimensions from among cuboidal object length, width and height. The improved cuboidal dimensions are provided as dimensions for the object. A user interface displays a plurality of interface screens for setup and runtime operation.
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公开(公告)号：US20220358668A1
公开(公告)日：2022-11-10
申请号：US17745087
申请日：2022-05-16
申请人： Cognex Corporation
发明人： Nitin M. Vaidya , Hongwei Zhu , Daniel Moreno , Ben R. Carey , Nickolas J. Mullan , Gilbert Chiang , Yukang Liu , David J. Michael
摘要： A system and method for estimating dimensions of an approximately cuboidal object from a 3D image of the object acquired by an image sensor of the vision system processor is provided. An identification module, associated with the vision system processor, automatically identifies a 3D region in the 3D image that contains the cuboidal object. A selection module, associated with the vision system processor, automatically selects 3D image data from the 3D image that corresponds to approximate faces or boundaries of the cuboidal object. An analysis module statistically analyzes, and generates statistics for, the selected 3D image data that correspond to approximate cuboidal object faces or boundaries. A refinement module chooses statistics that correspond to improved cuboidal dimensions from among cuboidal object length, width and height. The improved cuboidal dimensions are provided as dimensions for the object. A user interface displays a plurality of interface screens for setup and runtime operation.
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公开(公告)号：US11335021B1
公开(公告)日：2022-05-17
申请号：US16437180
申请日：2019-06-11
申请人： Cognex Corporation
发明人： Nitin M. Vaidya , Hongwei Zhu , Daniel Moreno , Ben R. Carey , Nickolas J. Mullan , Gilbert Chiang , Yukang Liu , David J. Michael
摘要： A system and method for estimating dimensions of an approximately cuboidal object from a 3D image of the object acquired by an image sensor of the vision system processor is provided. An identification module, associated with the vision system processor, automatically identifies a 3D region in the 3D image that contains the cuboidal object. A selection module, associated with the vision system processor, automatically selects 3D image data from the 3D image that corresponds to approximate faces or boundaries of the cuboidal object. An analysis module statistically analyzes, and generates statistics for, the selected 3D image data that correspond to approximate cuboidal object faces or boundaries. A refinement module chooses statistics that correspond to improved cuboidal dimensions from among cuboidal object length, width and height. The improved cuboidal dimensions are provided as dimensions for the object. A user interface displays a plurality of interface screens for setup and runtime operation.
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8.发明申请公开(公告)号：US20210350496A1
公开(公告)日：2021-11-11
申请号：US17179294
申请日：2021-02-18
申请人： Cognex Corporation
发明人： Ben R. Carey , Andrew Parrett , Yukang Liu , Gilbert Chiang
摘要： This invention provides a system and method for using an area scan sensor of a vision system, in conjunction with an encoder or other knowledge of motion, to capture an accurate measurement of an object larger than a single field of view (FOV) of the sensor. It identifies features/edges of the object, which are tracked from image to image, thereby providing a lightweight way to process the overall extents of the object for dimensioning purposes. Logic automatically determines if the object is longer than the FOV, and thereby causes a sequence of image acquisition snapshots to occur while the moving/conveyed object remains within the FOV until the object is no longer present in the FOV. At that point, acquisition ceases and the individual images are combined as segments in an overall image. These images can be processed to derive overall dimensions of the object based on input application details.
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公开(公告)号：US20210350495A1
公开(公告)日：2021-11-11
申请号：US17173032
申请日：2021-02-10
申请人： Cognex Corporation
发明人： Gang Liu , Ben R. Carey , Nickolas J. Mullan , Caleb Spear , Andrew Parrett
摘要： This invention provides a system and method that performs 3D imaging of a complex object, where image data is likely lost. Available 3D image data, in combination with an absence/loss of image data, allows computation of x, y and z dimensions. Absence/loss of data is assumed to be just another type of image data, and represents the presence of something that has prevented accurate data from being generated in the subject image. Segments of data can be connected to areas of absent data and generate a maximum bounding box. The shadow that this object generates can be represented as negative or missing data, but is not representative of the physical object. The height from the positive data, the object shadow size based on that height, the location in the FOV, and the ray angles that generate the images, are estimated and the object shadow size is removed from the result.
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