38results about How to "Guaranteed scan quality" patented technology

The invention discloses a crack detection device for columnar parts. The crack detection device comprises two stand columns; a cross beam is fixedly connected to the upper ends of the two stand columns, two through holes are formed in the cross beam, a detection cavity is formed between the cross beam and the stand columns, the front end and the rear end of the detection cavity communicate with the outside, a lifting block is arranged in the detection cavity in a sliding mode, and an automatic fastening device is arranged on the lower end surface of the cross beam and the upper end face of thelifting block. Due to the fact that a lifting type automatic clamping device is adopted, the parts can be directly and completely scanned after being fixed, meanwhile, a self-rotation lifting type scanning structure is adopted to carry out system scanning on a to-be-detected part, so that the scanning quality and the scanning speed are guaranteed, the initial position is automatically returned after scanning is completed, the actions of the device are all automatically carried out, so that the manual operation is reduced, and the working efficiency is improved.

The invention discloses a flattening method of a deformed page. The flattening method comprises the following steps of: acquiring a matching point set from a left image or a right image; acquiring a corresponding point set from a right view or a left view through the matching point set and a digital image related method; concentrating a corresponding point of any one point A in the matching point set into an A'; acquiring a three-dimensional coordinate of the A through a binocular vision principle by utilizing two-dimensional coordinates of the A and the A' in the left image and the right image; determining an undetermined parameter in a page curve surface parameter equation through the three-dimensional coordinate of a matching point concentrated point and a fitting method; acquiring a flattened plane coordinate of any point of a page curve surface through the flattening method; acquiring a corresponding relation between gray level distribution on a space curve surface and gray level distribution of a flattened plane according to a corresponding relation between the space curve surface and a point on the flattened plane; and calculating a flattened image point by point. The method disclosed by the invention corrects character torsion and the corrected character is the same as a shot character when the page is flatly placed; and the scanning speed of a book is improved.

The present invention provides an image reading apparatus and an imaging apparatus, wherein the image reading apparatus comprises: a lower cover, a scanning module, a flat cable of the scanning module, an operation panel and a flat cable of the operation panel, and further comprises a rail and a belt which are disposed in the lower cover, and are used for driving and guiding the scanning module to perform image scanning. the flat cable of the operation panel is connected with the operation panel; the flat cable for the scanning module is connected to the scanning module; the bottom surface of the lower cover is provided with one or more accommodating groove which recesses towards the back opposite to the bottom surface; the bottom surface of the accommodating groove is lower than the bottom surface of the lower cover; and the flat cable for the operation panel is disposed in the accommodating groove. According to the present invention, the structure of the imaging apparatus is simplified.

The invention discloses a bankbook printer capable of achieving scanning and magnetic stripe reading-writing in the same channel. The bankbook printer is internally provided with a paper feeding channel, a paper feeding transmission mechanism, a magnetic stripe positioning module and a control module. A scanning module or a magnetic stripe reading-writing module connected with the control module is arranged in the paper feeding channel, or the scanning module and the magnetic stripe reading-writing module are arranged in the paper feeding channel. The magnetic stripe reading-writing module, a printing module and the scanning module are arranged in the paper feeding channel in sequence in the paper feeding direction. The paper feeding transmission mechanism is used for conveying paper required by the printing module and the scanning module and adjusting the position of a bankbook or a magnetic card required by the magnetic stripe reading-writing module. The control module is connected to external equipment to receive an external command and also connected with the paper feeding transmission mechanism, the magnetic stripe positioning module, the magnetic stripe reading-writing module, the printing module and the scanning module to conduct state detection and controlling on the paper feeding transmission mechanism, the magnetic stripe positioning module, the magnetic stripe reading-writing module, the printing module and the scanning module. By means of the bankbook printer, the scanning function and the magnetic stripe reading-writing function are integrated in the paper feeding channel, and scanning, printing and magnetic stripe reading-writing can be completed during one-time paper feeding operation.

The invention discloses an oral cavity scanning device based on the principle of optical coherence tomography. Based on the principle of optical coherence tomography, the present invention detects interference spectrum signals generated by combining backscattered light and reference beams of tissues at different depths, and realizes parallel detection of depth information through inverse Fourier transform. The present invention combines the longitudinal tomography capability with the transverse scanning function, and provides an oral cavity scanning device for real-time reconstruction of a high-resolution digital three-dimensional model of the oral cavity under the conditions of non-ionizing radiation and non-invasiveness. Compared with the traditional impression technology, the present invention realizes complete digitization, saves material cost and operation time, improves patient comfort and model quality, and the digital model is convenient for storage, transmission and analysis. The invention has beneficial effects that the current digital oral impression technology does not possess.

A crack detection device for cylindrical parts includes centrifugal mechanism, which includes two stand columns (21), and a cross beam (22) is fixedly connected to the upper ends of the two stand column stand columns (21), two through holes (91) are formed in the cross beam (22), and a detection cavity (24) is formed between the cross beam (22) and the stand column (21). The traditional hand-held scanning equipment is not accurate in scanning range and has scanning holes. At the same time, it can only scan one side of the part, but still needs to turn the part manually. The lifting type automatic clamping device is adopted in the invention, which can scan the parts directly after fixing the parts.

The invention provides a flange structure for a scanner, the scanner and a multifunctional machine. The flange structure for the scanner comprises an upper cover, a lower cover, scanning glass and anoriginal manuscript pressing plate, a sealing part which at least partially protrudes out of the upper surface of the scanning glass is formed on the side, corresponding to the manuscript taking-out side, of the lower cover, and the sealing part is provided with a guide surface adjacent to the outer edge of the scanning glass and a sealing surface which is matched with the manuscript pressing plate to form single-side sealing. According to the scanner, the sealing surface matched with the manuscript pressing plate is arranged to prevent external dust and light from entering the scanner, so that the scanning quality is guaranteed, and the manuscript can conveniently slide out of the guide surface due to the arrangement of the guide surface.

An auxiliary scanning tool capable of automatically adapting to books and files, comprising a V-shaped frame assembly and a book bearing plate assembly arranged below the V-shaped frame assembly, the book bearing plate assembly being capable of moving in a horizontal direction, and the V-shaped frame assembly being capable of moving along the direction perpendicular to the direction of movement of the book bearing plate assembly; when moving vertically, the V-shaped frame assembly can be inserted into the book bearing plate assembly, the V-shaped assembly being adjacent and parallel to the book bearing plate assembly. The tool is structurally simple and, due to the rationally designed structure, can ensure no damage is caused to the scanned material regardless of the thickness of the book archive or the height of the binding thread, whilst the scanner is able to automatically scan clearly and thoroughly, thus ensuring both the scanning quality and the safety of the book.

The invention discloses a helical scanning method for terahertz beam alignment. The method first estimates the area where the terahertz signal intensity distribution is relatively large, and sets a starting point in the area, so that the receiver can scan at the starting point at this starting point. Coarse scanning is carried out in a spiral outward manner until the received terahertz signal power is greater than a certain threshold, and then the precision of the spiral scanning is continuously increased, so that a considerable power value can be obtained after the rough scanning, while in the fine scanning stage, the optimized hill climbing method is used to find The maximum power point that satisfies the accuracy. The present invention uses a low-time-cost helical scanning algorithm to determine the maximum power point of a terahertz signal through an optimized algorithm, reduces unnecessary scanning paths, has a simple implementation method and low cost, and the natural light irradiation experiment proves that the scanning quality can be guaranteed.

The invention discloses an anti-vibrating image scanning device. The anti-vibrating image scanning device comprises a manuscript arrangement table, a contact-type image sensor, a frame, a connecting component, a driving component, a temperature control device and a control circuit board, wherein the manuscript arrangement table is used for arranging to-be-scanned manuscripts and comprises a box body and a glass plate, and a metal plate is arranged in the box body; the contact-type image sensor image sensor is used for obtaining characters and / or images in the to-be-scanned manuscripts; the frame is disposed in a box body, and the contact-type image sensor is disposed on the frame; the connecting component comprises a strip-shaped main sliding chute and a sliding block, and card clothing is paved on the bottom of the main sliding chute; the driving component comprises a rack, a gear, a driving motor and an electromotive push rod, all of which are disposed in the box body; the temperature control device comprises a temperature sensor, a fan and a single chip computer; the control circuit board is electrically connected with the contact-type image sensor, the driving motor and the electromotive push rod and controls on and off of the contact-type image sensor, the driving motor and the electromotive push rod. The anti-vibrating image scanning device disclosed by the invention not only has a simple structure and stable performances, but also has high scanning quality.

A method and device for automatic alignment to center in a book archive scanning process. The device comprises a V-shaped frame component capable of moving in the vertical direction, a guiding mechanism capable of moving in the transverse direction provided below the V-shaped frame component, a locking mechanism used for controlling the positions of transverse movements provided within the guiding mechanism, and a book supporting mechanism provided above the guiding mechanism, the book supporting mechanism can move in the transverse direction with the guiding mechanism, and the V-shaped frame component can be inserted into the book supporting mechanism when moved in the vertical direction. The device and method implement alignment to center when scanning, thus ensuring scan quality, allow tight attachment when aligned to center, thus softening angle and reducing friction, and protect paper surfaces of book archives, thus ensuring the safety of the book archives.