Abstract:
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.
Abstract:
A digital image capture and processing system having a housing with a light transmission window, and an illumination subsystem including an illumination board disposed adjacent the light transmission window, configured substantially within a plane, and having a central aperture mounted adjacent the imaging window. The illumination board supports an array of illumination sources mounted around at least portion of the central aperture, for producing and a field of illumination within the FOV of its image formation and detection subsystem during object illumination and imaging operations. A FOV folding mirror is mounted within the housing and beneath the illumination board, and folds the path of the FOV beneath the light transmission aperture and directs and projects the FOV out through the central aperture. Also, an automatic illumination control subsystem is provided for controlling the array of illumination sources during object illumination and imaging operations.
Abstract:
A method of and system for returning a consumer product in a retail environment and preventing or reducing employee theft of returned merchandise in retail store environments and providing greater accountability for returned merchandise in retail store environments. The method comprises providing an image capturing and processing system at the retail environment, including a system housing having an imaging window and generating and projecting a field of view through the imaging window, and into a 3D imaging volume definable relative to the imaging window. The digital image capturing and processing system produces one or more digital images of consumer goods (i.e. products) passing within the 3D imaging volume. Identification (ID) data for the consumer returning the purchased goods is entered into a host system connected to the digital image capturing and processing system, as well as identification data for the employee to whom the goods are being returned. The digital image capturing engine captures one or more digital images of returned products and these digital images are provided to the host system. The host system generates an electronic document containing identification data for the customer and employee along with the one or more digital images of the returned product or merchandise. The electronic document is then transmitted from the host system to a database server associated with the retail store environment, for storage and subsequent processing. By virtue of the present invention, it is now possible to prevent or reduce employee theft of returned merchandise in retail store environments and provide greater accountability for returned merchandise in such store environments.
Abstract:
A laser beam generation system having an integrated coherence reduction mechanism. The system includes: a flexible circuit having a first end portion and a second end portion; a laser diode mounted on the first end portion of the flexible circuit, for producing a laser beam having a central characteristic wavelength; diode current drive circuitry for producing a diode drive current to drive the laser diode and produce said laser beam; and high frequency modulation (HFM) circuitry also mounted on the first end portion of the flexible circuit, for modulating the diode drive current at a sufficiently high frequency to cause the laser diode to produce a laser beam having a spectral side-band components about the central characteristic wavelength, and thereby reducing the coherence as well as coherence length of the laser beam.
Abstract:
A digital image capturing and processing system for automatically recognizing objects in a POS environment. The system includes a system housing having an imaging window; illumination and imaging stations for generating and projecting illumination and imaging planes or zones through the imaging window, and into a 3D imaging volume definable relative to the imaging window, for digital imaging an object passing through the 3D imaging volume, and generating digital linear images of the object as the object intersects the illumination and imaging planes or zones during system operation. A digital image processor processes the digital images and automatically recognizes the object, such as produce and fruit, graphically represented by the digital images.
Abstract:
A planar laser illumination module (PLIM) including: (i) a laser illumination source driven preferably by high frequency modulated (HFM) diode current drive circuitry; (ii) a beam collimating optics disposed beyond the laser illumination source; (ii) an optical beam multiplexer (OMUX) device disposed beyond the collimating optics; and (iv) a planarizing-type illumination lens array disposed beyond the OMUX device, and arranged for generating a plurality of substantially planar coherence-reduced laser illumination beams (PLIBs) that form a composite substantially planar laser illumination beam (PLIB) having substantially reduced spatial/temporal coherence.
Abstract:
A laser beam despeckling device including a laser diode for producing a laser beam having a central characteristic wavelength. The device includes diode current drive circuitry for producing a diode drive current to drive said laser diode and produce said laser beam. High frequency modulation (HFM) circuitry modulates the diode drive current at a sufficiently high frequency to cause said laser diode to produce spectral side-band components about the central characteristic wavelength, and reducing the coherence as well as coherence length of the laser beam. An optical beam multiplexing (OMUX) module is provided for receiving the laser beam as input beam, a generating as output, a plurality of laser beam components that are recombined to produce a composite laser beam having substantially reduced coherence for use in illumination applications where a substantial reduction in speckle pattern noise is achieved.
Abstract:
A 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 module 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 module includes a spectral-mixing based 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 produce a composite illumination field that is at least substantially coextensive with the FOV of the image sensing array. An automatic object detection subsystem automatically detects 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 operations so as to achieve sufficient image contrast in captured digital images to ensure satisfactory image processing.
Abstract:
An automatic automatically-triggered digital video imaging based code symbol reading system for use in point of sale (POS) environments, employing an adaptive control process involving the real-time analysis of the exposure quality of captured frames of digital image data and the real-time reconfiguration of system control parameters (SCPs) based on the results of such exposure quality analysis. By virtue of the present invention, the system enables the reliable reading of code symbols graphically represented in digital images, under demanding point-of-sale lighting conditions and other challenging environments.
Abstract:
An automatic code symbol reading system for use in point of sale (POS) environments, employing automatic object motion detection and illumination control, and digital video image capturing and processing techniques, which ensures the reliable reading of code symbols graphically represented in digital images, in high-throughput point-of-sale and other environments, while providing versatility required to accommodate the different ways in which human operators present objects for code symbol reading at POS environments.