摘要:
A coplanar laser illumination and imaging subsystem deployable in an image capturing and processing system, and including an image formation and detection (IFD) subsystem having an image sensing array and optics providing a field of view (FOV) on the image sensing array, and forming an image of an object within the FOV and detecting said image on the image sensing array and producing a digital image thereof. The system includes a spectral-mixing based illumination subsystem having an array of VLDs for producing a visible illumination beam, and an array of infrared (IR) laser diodes (LDs) for producing an invisible illumination beam. The visible and invisible illumination beams spatially overlaps and spatially/temporally intermixes with each other to produce a composite spectrally-mixed illumination beam having a relative power ratio of visible illumination to invisible illumination (VIS/IR), and is substantially coplanar with the FOV of said image sensing array. A laser despeckling mechanism is provided for reducing the coherence of the composite spectrally-mixed illumination beam, and/or its components, so that the digital images produced by the IFD subsystem having substantially reduced levels of speckle-pattern noise when the laser despeckling mechanism is operational.
摘要:
A method of illuminating objects using adaptively controlled mixing of spectral illumination energy to form and detect digital images of objects at a POS. The method comprises providing, at a POS environment, a digital image capture and processing system having a system housing with an imaging window, and an area-type illumination and imaging station disposed within said system housing, for projecting a coextensive area-type illumination and imaging field (i.e. zone) through said imaging window into a 3D imaging volume during object illumination and imaging operations. As the object is moved through the 3D imaging volume, its motion is automatically detected, and signals indicative of said detected object motion are generated. In response to the generated signals, a first field of visible illumination is produced from an array of visible LEDs, simultaneously with a second field of invisible illumination from a array of infrared (IR) LEDs. These first and second fields of illumination spatially overlap and intermix with each other to produce a composite wide-area illumination beam that is at least substantially coextensive with the FOV. During object illumination and imaging operations, the relative power ratio (VIS/IR) of these fields of visible illumination and invisible illumination is adaptively controlled as one or more digital images of the illuminated object are formed and detected, captured and buffered, and ultimately processed so as to read one or more 1D and/or 2D code symbols graphically represented in the digital images.
摘要:
A method of illuminating objects using adaptively controlled mixing of spectral illumination energy to form and detect digital images of objects at POS environments with sufficiently high image contrast and quality. The method comprises providing, at a POS environment, a digital image capture and processing system having a system housing with an imaging window, and a coplanar illumination and imaging station disposed within said system housing, for projecting a coplanar illumination and imaging plane through the imaging window into an imaging volume during object illumination and imaging operations. As the object is moved through the imaging volume, its motion is automatically detected, and signals indicative of said detected object are generated. In response to the generated signals, a first field of visible illumination is produced from an array of visible laser diodes (VLDs), simultaneously with a second field of invisible illumination from a array of infrared (IR) laser diodes (LDs). These first and second fields of illumination spatially overlap and intermix with each other and produce a composite planar illumination beam that is substantially coextensive with the FOV. During object illumination and imaging operations, the relative power ratio (VIS/IR) of these fields of visible illumination and invisible illumination are controlled as one or more linear digital images of the illuminated object are formed and detected, captured and buffered, and ultimately processed so as to read one or more 1D and/or 2D code symbols graphically represented in the digital images. In an illustrative embodiment, during object illumination and imaging operations operation, the relative power ratio (VIS/IR) is adaptively controlled to form and detect digital images of objects at POS environments with sufficiently high image contrast and quality.
摘要:
A method of illuminating objects using adaptively controlled mixing of spectral illumination energy to form and detect digital images of objects at POS environments with sufficiently high image contrast and quality. The method comprises provides, at a POS environment, a digital image capture and processing system having a system housing with an imaging window, and an area-type illumination and imaging station disposed within said system housing, for projecting a coextensive area-type illumination and imaging field (i.e. zone) through said imaging window into a 3D imaging volume during object illumination and imaging operations. As the object is moved through the 3D imaging volume, its motion is automatically detected, and signals indicative of said detected object motion are generated. In response to the generated signals, a first field of visible illumination is produced from an array of visible LEDs, simultaneously with a second field of invisible illumination from a array of infrared (IR) LEDs. These first and second fields of illumination spatially overlap and intermix with each other and are substantially coextensive with the FOV. During object illumination and imaging operations, the relative power ratio (VIS/IR) of these fields of visible illumination and invisible illumination are controlled as one or more digital images of said illuminated object are formed and detected, captured and buffered, and ultimately processed so as to read one or more 1D and/or 2D code symbols graphically represented in the digital images. During object illumination and imaging operations operation, the relative power ratio (VIS/IR) is adaptively controlled to form and detect digital images of objects at POS environments with sufficiently high image contrast and quality.
摘要:
A POS-based digital image capturing and processing system for illuminating objects using automatic object detection and spectral-mixing illumination technique. The system comprises an area-type illumination and imaging station for projecting a coextensive area-type illumination and imaging field (i.e. zone) into a 3D imaging volume during object illumination and imaging operations. The area-type illumination and imaging station includes an illumination subsystem for producing a first field of visible illumination from an array of visible LEDs, and producing a second field of invisible illumination from an array of infrared (IR) LEDs. wherein the first and second fields of illumination spatially overlap and intermix with each other and are substantially coextensive with the FOV of the image sensing array. An automatic object motion detection subsystem automatically detects the motion of an object moving through the 3D imaging volume, while an illumination control subsystem controls the relative power ratio (VIS/IR) of visible illumination and invisible illumination during system operation so as to minimize the amount of visible illumination energy required to capture sufficiently high-contrast images of said objects and successfully process the same.
摘要:
A digital image capturing and processing system including an image formation and detection (IFD) subsystem having a linear image sensing array and optics providing a field of view (FOV) on the linear image sensing array. A spectral-mixing based illumination subsystem produces a first field of visible laser illumination produced from an array of visible VLDs, and a second field of invisible laser illumination produced from an array of IR laser diodes (LDs) that spatially overlap and intermix with each other so as to produce a composite planar laser illumination beam which is substantially with the FOV of the linear image sensing array. An illumination control subsystem controls the spectral mixing of visible and invisible laser illumination produced from the spectral-mixing based illumination subsystem, by adaptively controlling the relative power ratio (VIS/IR) of said fields of visible and invisible laser illumination. An image capturing and buffering subsystem captures and buffers images from the image sensing array. An automatic object detection subsystem automatically detects the an object moving through at least a portion of the FOV of the linear image sensing array, and generation a control activation signal. A control subsystem, responsive to the control activation signal, controls the operations of the subsystems within the illumination and imaging station.
摘要:
A method of illuminating objects using adaptively controlled mixing of spectral illumination energy to form and detect digital images of objects at a POS. The method comprises providing, at a POS environment, a digital image capture and processing system having a system housing with an imaging window, and an area-type illumination and imaging station disposed within said system housing, for projecting a coextensive area-type illumination and imaging field (i.e. zone) through said imaging window into a 3D imaging volume during object illumination and imaging operations. As the object is moved through the 3D imaging volume, its motion is automatically detected, and signals indicative of said detected object motion are generated. In response to the generated signals, a first field of visible illumination is produced from an array of visible LEDs, simultaneously with a second field of invisible illumination from a array of infrared (IR) LEDs. These first and second fields of illumination spatially overlap and intermix with each other to produce a composite wide-area illumination beam that is at least substantially coextensive with the FOV. During object illumination and imaging operations, the relative power ratio (VIS/IR) of these fields of visible illumination and invisible illumination is adaptively controlled as one or more digital images of the illuminated object are formed and detected, captured and buffered, and ultimately processed so as to read one or more 1D and/or 2D code symbols graphically represented in the digital images.
摘要:
A method of illuminating objects using adaptively controlled mixing of spectral illumination energy to form and detect digital images of objects at POS environments with sufficiently high image contrast and quality. The method comprises provides, at a POS environment, a digital image capture and processing system having a system housing with an imaging window, and an area-type illumination and imaging station disposed within said system housing, for projecting a coextensive area-type illumination and imaging field (i.e. zone) through said imaging window into a 3D imaging volume during object illumination and imaging operations. As the object is moved through the 3D imaging volume, its motion is automatically detected, and signals indicative of said detected object motion are generated. In response to the generated signals, a first field of visible illumination is produced from an array of visible LEDs, simultaneously with a second field of invisible illumination from a array of infrared (IR) LEDs. These first and second fields of illumination spatially overlap and intermix with each other and are substantially coextensive with the FOV. During object illumination and imaging operations, the relative power ratio (VIS/IR) of these fields of visible illumination and invisible illumination are controlled as one or more digital images of said illuminated object are formed and detected, captured and buffered, and ultimately processed so as to read one or more 1D and/or 2D code symbols graphically represented in the digital images. During object illumination and imaging operations operation, the relative power ratio (VIS/IR) is adaptively controlled to form and detect digital images of objects at POS environments with sufficiently high image contrast and quality.
摘要:
An omni-directional digital image capturing and processing system for use in a POS environment, comprising a system housing having an imaging window, and a plurality of coplanar illumination and imaging stations, disposed in the system housing, for generating and projecting a complex of coplanar illumination and imaging planes through said imaging window. At least one area-type illumination and imaging station is also disposed in the system housing, for generating and projecting an area-type illumination and imaging zone through the imaging window, which intersects with the complex of coplanar illumination and imaging planes within a 3D imaging volume definable relative to the imaging window, for omni-directional digital imaging of objects passing through the 3D imaging volume. Digital linear images of the object are generated when the object intersects with coplanar illumination and imaging planes, and digital area-type images of the object are generated when the object intersects with the area-type illumination and imaging zone, within the 3D imaging volume during system operation. The system also includes an object motion detection subsystem for automatically detecting the motion of objects passing through the 3D imaging volume, and generating motion data representative of the detected object motion within the 3D imaging volume.
摘要:
A digital image capturing and processing system comprising a system housing having an imaging window, a plurality of coplanar illumination and imaging subsystems disposed in the system housing. Each coplanar illuminating and linear imaging station includes a dual-type coplanar linear illumination and imaging engine that supports automatic image formation and detection along each pair of coplanar illumination and imaging planes generated by the coplanar illuminating and linear imaging station. Each pair of coplanar illumination and imaging planes are projected into the 3D imaging volume, for capturing of linear digital images of objects moved therewithin, and subsequent processing thereof for recognizing information graphically represented in the captured linear digital images, and automatic imaging-processing based object motion and velocity detection within the 3D imaging volume.