摘要:
An identification code-based three-dimensional interactive technique includes acquiring an image including an identification-coded real object, the image being taken by video-capable equipment, identifying an identification code from the identification-coded real object, obtaining object information corresponding to the identification code, acquiring a reference image associated with the identification code and feature points of the reference image, obtaining a position, an orientation, or a combination thereof on the video-capable equipment relative to the identification- coded real object based on the reference image and the feature points of the reference image, and conducting a three-dimensional interaction based on the position, the orientation, or a combination thereof of the video-capable equipment relative to the identification-coded real object and the object information corresponding to the identification code.
摘要:
A command can be input into a system (100, 800) using a data carrier (130, 310, 600) such as, for example, a card. The command is determined based on the orientation of the data carrier (130, 310, 600) relative to a reader (120, 300, 500, 700, 820) of the system (100, 800). Different commands can be input by changing the orientation of the data carrier (130, 310, 600).
摘要:
The present disclosure relates to a method and system for identifying and reading a barcode on a circular label. Such method and system, in the embodiment discussed, is concretely addressed to a specific example in the engineering of a barcode reader in an electromechanical system for biological analyses which uses cone-shaped tubes and corresponding strips of fluid containers. It is a requirement of the system that the right cone matches with the right strip. In order to avoid any human error, barcode reading system is implemented, by placing a barcode (e.g. a 2D barcode) on the cone-shaped tube and a barcode on the strip: however the particular shape of the cone poses some problems in the automatic localization and reading of the barcode on the circular label on top of the cone. An additional difficulty of the present system is that of the inclination of barcode reader with respect to the circular label carrying the code, due to the relative positioning of the various components of the machine which does not allow a straight alignment between the reader and the target. With the method according to a preferred embodiment of the present disclosure the circular label is scanned to detect the 2D barcode and it is then read, with a simplified algorithm requiring limited power and hardware resources.
摘要:
Un code-barres de sécurité 1 est composé de modules comportant des perturbateurs optiques trop petits pour être placés volontairement dans une position précise. Il est authentifié par une simple webcam 3 comportant un moyen de positionnement en trois dimensions 7 coopérant avec une structure graphique reconnaissable dite marqueur 2. Pour établir l'authenticité d'un objet protégé par ce code, on compare la description faite après son impression, stockée dans une base de données, avec une nouvelle description résultant d'au moins deux acquisitions, l'une dans les mêmes conditions, et l'autre en changeant le point de vue défini en trois dimensions, et/ou l'éclairage. Dans sa version préférée, un code-barres ne peut pas être imprimé pour représenter un nombre prédéterminé. Il est également impossible à reproduire. La production du dispositif peut être faite par les moyens déjà mis en œuvre pour l'impression du produit ou de son emballage, ce qui ne coûte presque rien.
摘要:
A method utilizing an imaging-based bar code reader to identify a desired acquisition area within a captured image frame, the desired acquisition area including a target bar code and an extent of the desired acquisition area bounded by a border featuring: identifying a region of the captured image frame corresponding to an image of the target bar code; determining a reference point within the imaged target bar code; determining a reference point within an image of the desired acquisition area; searching for an image of the border of the desired acquisition area; identifying the imaged border of the desired acquisition area; and saving in memory a portion of the captured image frame corresponding to an image within the imaged border.
摘要:
Systems and methods are provided for selectively reading and accepting optical codes (320, 330, 340, 350, 360, 370, 410F, 410N, 1210, 1220) within a scan volume (100, 1610, 1612) of the data reader (110, 1100, 1600). A method (500) of processing an optical code within the scan volume comprises acquiring (505), via the data reader, scan data including an image or scan of an optical code located within the scan volume of the data reader, processing (510) the scan data for decodable data corresponding to the optical code, and determining (525) whether to accept or reject the optical code based on a position within the scan volume of the optical code relative to a configurable exclusion zone. The determination (525) of whether to accept or reject the optical code may be based on other conditions of the optical code, such as a position of the optical code within the depth of field of the data reader, a symbology type of the optical code, and data encoded in the optical code.
摘要:
The present invention discloses a visual code system wherein camera-equipped mobile phones (or similar devices, such as wireless PDAs) are used to identify and decode images that contain one or more "visual codes." By recognizing a code tag, the device can determine a bit patterns or an integer number encoded in the tag (the code value), the targeted object or image element, as well as additional parameters, such as the viewing angle of the camera. Code recognition is performed on the mobile device itself. When the mobile device is equipped with a wireless communication channel, it can be used to retrieve online content or to access information on the Internet based on the sensed code and its parameters. The retrieved content can then be presented on the mobile device.
摘要:
Disclosed herein are a bar code encoding system and a bar code decoding system. The bar code encoding system includes a method for compressing the original data and adding data for error detection and correction to the compressed data to generate a large capacity 2-dimensional color bar code so as to be used as prints in an off-line environment and a large capacity 2-dimensional bar code pattern. The decoding system includes a method for receiving the prints including the 2-dimensional bar code generated by the encoding system through an input device such as a scanner and a camera, searching the 2-dimensional bar code to recognize it, performing color correction and error detection and correction, decompressing the compressed data to decode the original data.
摘要:
Two-dimensional Code having superior decoding property which is possible to control the level of error correcting codes, and method for encoding and decoding the two-dimensional Code is provided. The two-dimensional code includes finding pattern area comprised finding patterns for discriminating the code area from whole image, timing pattern area comprised timing patterns for checking a position of data area from the whole code and positions of each cells of the data area, and data area inputted various kinds of data and decoding information of data itself.
摘要:
The invention relates to a system for processing image data corresponding a scene comprising an imaging device and an image reading instruction indicia. In accordance with the invention, image data corresponding to a scene comprising an image reading instruction indicia is processed in a manner that depends on features of the image reading instruction indicia. If the image reading instruction indicia is of a type whose size, scaling, orientation, and distortion can be determined, scaling, orientation, and distortion characteristics determined from the image reading instruction indicia can be used to improve the image reading process.