摘要:
A method and apparatus for interrogating a target having a plurality of plasmon resonant particles (PREs) distributed in the target are disclosed. In the method, a field containing the target is illuminated, and one or more spectral emission characteristics of the light-scattering particles in the field are detected. From this data, an image of positions and spectral characteristic values in the field is constructed, allowing PREs with a selected spectral signature to be discriminated from other light-scattering entities, to provide information about the field. Also disclosed are a novel PRE composition for use in practicing the method, and a variety of diagnostic applications of the method.
摘要:
Die Erfindung betrifft einen optischen Sensor (1) zur Erfassung von 4-Breiten-Barcodes mit einer Lichtstrahlen (3) emittierenden Sendereinheit, mit einer Lichtstrahlen (3) empfangenden Empfängereinheit, mit einer Auswerteeinheit (6), in welcher Empfangssignale der Empfängereinheit ausgewertet werden. Jeder Barcode (7) weist eine Folge von Codeelementen mit Elementen vorgegebener Breiten auf, wobei die Breiten der Elemente der Codeelemente jedes Barcodes (7) in Form einer Decodiertabelle in der Auswerteeinheit (6) abgespeichert sind. In der Auswerteeinheit (6) wird aus den Empfangssignalen der Empfängereinheit ein digitales Signal generiert, wobei Kantenlagen von Codeelementen durch Wechsel von Signalzuständen des digitalen Signals detektiert werden. Eine vom Abstand benachbarter Kantenlagen gebildete Folge von Edge-to-Edge-Abständen (ei) wird einem Codeelement zugeordnet, wenn diese Folge von Edge-to-Edge-Abständen (ei) innerhalb vorgegebener Toleranzgrenzen mit den Breiten der Elemente dieses Codeelements übereinstimmt. Ein Barcode (7) gilt dann als erkannt, wenn jedem Codeelement des Barcodes (7) eine Folge von Edge-to-Edge-Abständen (ei) zugeordnet werden kann. Ein Barcode (7) ist auch dann erkannt, wenn nach einer Methode der kleinsten Abweichungen der Edge-to-Edge-Abstände (ei) bezüglich den Breiten der Elemente der Codeelemente eines Barcodes (7) wenigstens ein Codeelement der Folge der Edge-to-Edge-Abstände (ei) zugeordnet werden kann, und wenn die restlichen Codeelemente jeweils einer Folge von Edge-to-Edge-Abständen (ei) dadurch zugeordnet werden können, dass die jeweilige Edge-to-Edge-Abstände (ei) innerhalb vorgegebener Toleranzgrenzen mit den Breiten der Elemente des jeweiligen Codeelements übereinstimmen.
摘要:
The present invention relates to a method for decoding a graphical code, for example in the form of a one-or two-dimensional barcode, in particular an interleaved two of five or a quick response code and a corresponding reading device comprising the steps of: - acquiring, by an optical sensor, a first part of the graphical code, the part being smaller than the whole graphical code; - checking, in a first checking step, if the acquired part of the graphical code is decodable according to a first graphical code format or standard; - storing a result of decoding the acquired part of the graphical code, if the step of checking is successful; otherwise, storing the acquired part of the graphical code in a temporary buffer.
摘要:
The present invention discloses a method and an apparatus for localization and mapping based on color block tags, applicable for real-time mapping of an area to be localized in which at least one color block tag is arranged, the method comprises: taking a location of a first color block tag as a coordinate origin of a coordinate system when information of the first color block tag is obtained by a mobile electronic device which is moving along a certain trajectory for a first time, and recording the information of the first color block tag and coordinate values thereof; moving the mobile electronic device with the coordinate origin as a starting point to traverse all over the area to be localized, calculating and recording coordinate values of a location of an obstacle based on a moving direction and a moving distance of the mobile electronic device relative to the starting point when the mobile electronic device detects the obstacle each time during the traversal; and constructing a map according to recorded information of the color block tag and coordinate values thereof and the coordinate values of the location of each said obstacle when the traversal has been finished. The present invention discloses an apparatus for localization and mapping based on color block tags as well.
摘要:
A quality management system for products including a multiplicity of product unit specific indicators, each operative to provide a machine-readable indication of exceedence of at least one threshold by at least one product quality determining parameter, an indicator reader operative to read the product unit specific indicators and to provide output indications and a product type specific indication interpreter operative to receive the output indications and to provide human sensible, product unit specific, product quality status outputs.
摘要:
Systems and methods for imaging a target object are provided. In one example, an imaging device comprises an objective lens having symmetry around an optical axis. The objective lens is configured to disperse images of a target object in longitudinal chromatic aberrations along the optical axis. The imaging device further includes a sensor configured to obtain multiple images of the target object. Each image corresponds to a specific wavelength within a predetermined spectrum.
摘要:
Optical codes can include scanning an optical code and a character surrounding the optical code with a computer. A uniform resource locator can be extracted from the optical code. The uniform resource locator can be modified by associating the character surrounding the optical code with the URL extracted from the optical code.
摘要:
A method of processing a purchase transaction includes generating a transaction file containing a product code, which is transmitted from a user computing device when an image of a product code identifier is captured by the user computing device, a first user ID of the customer, and an indicator of whether or not the customer has opted in to receive electronic receipts. The method further includes generating an electronic receipt based on the transaction file, storing a conversion table containing the first and second user IDs of the customer, converting the first user ID contained in the transaction file to the second user ID based on the conversion table, when the indicator indicates that the customer has opted in, and storing the electronic receipt in association with the second user ID. The electronic receipt is transmitted in response to a request for electronic receipts associated with the second user ID.
摘要:
The invention relates to a system (100) and method for identifying and authenticating a tag defined by at least a spatial pattern and the spectral signature of luminescent particles. The system comprises a reading module (110), a processing module (120) and a database (130) containing the stored tag identities. The spatial pattern and spectral signature are acquired by an imaging unit (111) and a spectral unit (112) respectively in a sequential manner, the acquisition being synchronized with different excitation light pulses. The validation of the tag comprises the use of background and signal acquired by both the imaging unit (111) and the spectral unit (112).
摘要:
A method for controlling a workstation includes the following: (1) energizing a first illuminator to illuminate a first subfield of view with a first illumination pulse and subsequently energizing the first illuminator to illuminate the first subfield of view with a second illumination pulse; (2) exposing the array of photosensitive elements in the imaging sensor for a first sensor-exposure time and subsequently exposing the array of photosensitive elements in the imaging sensor for a second sensor-exposure time; and (3) processing an image captured by the imaging sensor to decode a barcode in the image. The first illumination pulse overlaps with the first sensor-exposure time for a first overlapped-pulse-duration, and the second illumination pulse overlaps with the second sensor-exposure time for a second overlapped-pulse-duration. The first overlapped-pulse-duration is different from the second overlapped-pulse-duration.