摘要:
There is set forth herein an indicia reading terminal having data format conversion capabilities. The indicia reading terminal includes an image sensor integrated circuit with an image sensor array comprising a plurality of pixels. The image sensor integrated circuit is configured to output image data in a first data format to a data formatting circuit for conversion to image data in a second data format. The data formatting circuit is configured to provide the image data in the second data format to the at least one data interface of a microprocessor integrated circuit, which is operative to transfer image data received by the at least one data interface into memory of the indicia reading terminal. A CPU of the microprocessor integrated circuit is operative for executing a decoding algorithm for processing image data in the memory for attempting to decode at least one symbol represented in the memory.
摘要:
There is set forth herein an indicia reading terminal having data format conversion capabilities. The indicia reading terminal includes an image sensor integrated circuit with an image sensor array comprising a plurality of pixels. The image sensor integrated circuit is configured to output image data in a first data format to a data formatting circuit for conversion to image data in a second data format. The data formatting circuit is configured to provide the image data in the second data format to the at least one data interface of a microprocessor integrated circuit, which is operative to transfer image data received by the at least one data interface into memory of the indicia reading terminal. A CPU of the microprocessor integrated circuit is operative for executing a decoding algorithm for processing image data in the memory for attempting to decode at least one symbol represented in the memory.
摘要:
There is set forth herein an indicia reading terminal having an illumination subsystem for projection of an illumination pattern, the illumination subsystem having at least one light source, the illumination subsystem being switchable between a first state and a second state, wherein the illumination subsystem in the second state projects illumination light at a projection angle that is more narrow than a projection angle of illumination light projected by the illumination subsystem when the illumination subsystem is in the first state. An indicia reading terminal can include an imaging subsystem including an image sensor array and an imaging lens for focusing an image of a target onto the image sensor array, the imaging lens being a variable imaging lens and having a first lens setting at which the lens assembly has a relatively nearer plane of optimum focus and a second lens setting at which the imaging lens has a relatively farther plane of optimum focus setting.
摘要:
A multi-stage laser beam despeckling device including a first laser beam despeckling module for optically multiplexing an input laser beam into a temporal/spatial coherence-reduced output laser beam; and a second laser beam despeckling module, optically coupled to the first laser beam despeckling module, for receiving the temporal/spatial coherence-reduced as an input laser beam to the second despeckling module and producing a further temporal/spatial coherence-reduced output laser beam.
摘要:
A tunnel-type digital imaging-based self-checkout system capable of generating and projecting coplanar illumination and imaging planes into a 3D imaging volume within a tunnel structure. The tunnel structure is supported above a package conveyor in a retail POS environment, and employs automatic package identification, profiling and tracking techniques during self-checkout operations.
摘要:
A digital illumination and imaging system employing one or more planar laser illumination modules (PLIMs) each 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 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. A digital image detection array for detecting digital images of an object illuminated by the composite substantially planar laser illumination beam. By virtue of the present invention, the power of speckle pattern noise, observed in a digital image of an object detected at the digital image detection array, is substantially reduced when the digital image is formed using the substantially planar laser illumination beam.
摘要:
A digital image capture and processing system comprising an illumination measurement subsystem for measuring the level of illumination at a particular region of the field of view (FOV) of the system during object illumination and imaging operations, and producing and storing an illumination measure for achieving a desired spatial intensity in a digital image to be formed and detected by the image formation and detection subsystem. An illumination control subsystem uses the illumination measure to control a LED-based illumination array during object illumination and imaging operations. A programmed image processor supports an image-processing based illumination metering program, as well as processes digital images formed and detected by the image formation and detection subsystem so as to read or acquire information graphically represented in the digital images. A computing platform supports the implementation of one or more of the subsystems above, and includes memory for storing at least one code symbol reading application.
摘要:
A hand-supportable digital-imaging based system for reading bar code symbols involving: automatically detecting the presence of an object within a field of view FOV of the system, and in response thereto, automatically generating an image cropping zone (ICZ) framing pattern and projecting the ICZ framing pattern within the FOV and onto the detected object; visually aligning the code symbol on the detected object, within the ICZ framing pattern; manually actuating a trigger switch when the code symbol on the object is located within the ICZ framing pattern, and while the ICZ framing pattern and a field of illumination are being simultaneously projected onto the object during object illumination operations, forming and capturing a digital image of the code symbol on the detected object; automatically cropping the image pixels contained within the spatial boundaries of the ICZ framing pattern, from the pixels of the digital image; and decode processing the cropped image so as to read one or more 1D and/or 2D code symbols graphically represented therein.
摘要:
A hand-supportable digital image capture and processing system comprises: an area-type image formation and detection subsystem having an area-type image detection array; an LED-based illumination subsystem having a LED-based illumination array; an automatic light exposure measurement and illumination control subsystem; an image capturing and buffering subsystem; and an image-processing subsystem. The LED array is automatically driven in a precise manner to globally expose the area-type image detection array with LED-based illumination only when substantially all of its rows of pixels are in a state of integration and have a common integration time, thereby enabling the capture of high quality images independent of the relative motion between the object and the hand-supportable digital image capture and processing system.
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 coplanar illumination and imaging station for projecting at least one coplanar illumination and imaging plane into a imaging volume during object illumination and imaging operations. The coplanar illumination and imaging station includes an illumination subsystem for producing a first field of visible illumination from an array of visible VLDs, and producing a second field of invisible illumination from an array of infrared (IR) laser diodes (IR-LDs). wherein the first and second fields of illumination spatially overlap and intermix with each other and are substantially coplanar with the FOV of the linear image sensing array. An automatic object detection subsystem automatically detects an object moving through the 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.