146results about How to "Improve scan quality" patented technology

The invention discloses a three-dimensional laser scanning device with adjustable visual field and area resolution. The three-dimensional laser scanning device comprises a two-dimensional laser scanner, a scanner fixing bracket, a U-shaped rotating frame, a sliding block, an L-shaped bracket, a piston rod, a hinge, a motor and a motor rotating arm. The two-dimensional laser scanner is mounted on the scanner fixing bracket and the U-shaped rotating frame. The bottom of the scanner fixing bracket is connected with a rotating shaft of the motor through the piston rod, and the hinge and the motor rotating arm, so that an included angle is formed by a scanning plane and the horizontal plane of the two-dimensional laser scanner, and the two-dimensional laser scanner linearly rotates around the rotating shaft of the motor under the drive of the motor. With the adoption of the manner, the maximum value and the minimum value of the scanning resolution cannot be limited within a certain area at a position in the view field. The resolutions of a horizontal component and a vertical component in the view field are adjusted simultaneously by adjusting a rotating speed of an additional motor. Furthermore, even if the motor rotates at a constant speed without controlling the rotating speed of the motor, the view field angle and the resolution are adjusted by adjusting the height of the sliding block.

An image reading device and an image forming apparatus having the same that can increase a scan quality by improving mounting positions of units to read information recorded on a document and a mounting structure of a light shielding member. The image reading device may include a first reading unit to read image information recorded on a first surface of a document, a second reading unit disposed at a predetermined distance from the first reading unit along a document feeding direction to read image information recorded on a second surface of the document, and at least one light shielding member mounted between the first reading unit and the second reading unit along the document feeding direction. The light shielding member may extend in a direction different from the document feeding direction such that one end portion is located in a document feeding path. The light shielding member may be provided with a document guide portion to guide the document.

The invention provides a novel 3D printing laser scanning method. The method comprises the following steps: setting the width between every two adjacent parallel lines in a parallel line set, and setting an included angle between the parallel line set and a central axis of a second-dimensional coordinate plane according to the shape of a section and based on the target of dividing the section into similar areas as many as possible; dividing the section into a plurality of unit graphics through a plurality of parallel lines; and setting a scanning line direction according to the property of laser forming powder, and then planning to obtain a scanning path of each unit graphic. The method has the advantages that each section is divided into the plurality of unit graphics of which the geometric properties are as similar as possible, and each unit graphic is treated as a scanning area, so that the laser scanning quality is uniform, and the anisotropy of the whole part can be inhibited; and random and incremental line width variation modes are set for the section of each layer, so that the fixation properties of combined surfaces of areas can be avoided during the layered overlapping process, and as a result, the risk caused by cracks can be reduced.

The invention discloses a book scanner capable of adjusting a forward leaning angle of a scanning platform. The scanner comprises a frame, an operating panel, a group of scanning unit assemblies, a scanning data support assembly, a computer host and a power supply supplied to work of the scanner. The scanner is characterized in that: the frame comprises an upper scanning platform stand and a base stand; the group of scanning unit assemblies and the scanning data support assembly are arranged in the upper scanning platform stand, and each scanning unit assembly in the group of scanning unit assemblies faces the scanning data support assembly; the computer host and the power supply are arranged in the upper scanning platform stand or the base stand; and the front sides or the rear sides of the upper scanning platform stand and the base stand are in articulated connection, and a leaning angle supporting and controlling component for controlling and supporting the forward leaning angle of the upper scanning platform stand is arranged between the rear sides or the front sides of the upper scanning platform stand and the base stand. According to the scanner, an operator can freely adjust the most appropriate position per se and work on scanning under a comfortable condition, and the fatigue degree is reduced.

The invention relates to a straddle type monorail image modeling rail inspection vehicle and an inspection method. The image modeling rail inspection vehicle comprises a trolley, digital cameras, an RTK device and scanners. The trolley is movably spanned on a track beam, and a moving station of the RTK device is fixed at a top of the trolley. Two outer sides of the trolley, corresponding to the track beam, are provided with a first support respectively, and a second support is horizontally arranged correspondingly to an upper portion of the track beam. The several digital cameras are arrangedon the first support along a vertical direction, and the several digital cameras are arranged on the second support along a horizontal direction. The scanners are arranged on the two first supports. The vehicle and the method have advantages that appearance three-dimensional image modeling of a straddle type monorail can be completed quickly and effectively, and a problem that a traditional scanning method is complex in operation is solved; a workload of an operator is greatly reduced on the condition of ensuring efficiency; and accurate detection of a monorail appearance size is completed incombination with a three-dimensional image model.

A method of auto-deskewing a titled original image is provided. Frist, obtain an original image by scanning to acquire values of pixels in the orignal image. Next subject the original image to a binarization process. And, set a datum line in the original image. Then determine a tilting angle on the basis of the datum line. Finally, adjust the original image on the basis of the tilting angle. Therefore, the tilting angle of the original image may be acquired to adjust.

A scanning module includes a body, a reflecting unit, and an image capture unit. The body includes a reflecting chamber disposed in a surrounding wall. The surrounding wall is formed with an incident hole allowing an incident light field to be transmitted into the reflecting chamber therethrough along an incident axis. The reflecting unit is disposed within the reflecting chamber, and includes a first reflector for reflecting the incident light field, as well as second and third reflectors for reflecting light transmitted from the first reflector to the image capture unit. An angle formed between the incident axis and a normal line of the first reflector is not smaller than 30 degrees. The image capture unit is disposed nearer to the incident hole than the first reflector along a direction of the incident axis, and includes a lens, and a sensing member.

A light guide module of a scanning apparatus includes plural side-emitting light emitting diodes and a light-guiding post, which are disposed on a circuit board. The light-guiding post has plural reflective structures corresponding to respective side-emitting light emitting diodes for receiving light beams from respective side-emitting light emitting diodes. A spacing interval between two of the side-emitting light emitting diodes at a middle portion of the circuit board is greater than a spacing interval between two of the side-emitting light emitting diodes at a side of the circuit board.

A dust tolerant scanner without a transparent plate to support objects scanned by its media scan assembly. Other dust or debris collecting surfaces in the optical path of the scanner are positioned as far away as possible from an object focal plane of the media scan assembly. The media scan assembly includes upper and lower document feeder portions which define a media path adjacent to a reference surface of the upper portion. The lower document feeder portion includes a media conformance member which positions pieces of media against the reference surface as the pieces of media are advanced along the media path. The media conformance member includes ramp portions and an aperture which provides an optical path between the object focal plane and a sensor focal plane within the scanner.

The invention discloses a three-dimensional laser scanning head, which includes an optical path assembly and a driving assembly, the driving assembly includes a planetary gear transmission set, the optical path assembly includes a half mirror, a full mirror group and a field mirror, and the driving The assembly can be arranged at one end of the field lens, so that the driving assembly is arranged between the half mirror and the field mirror, or can be arranged at the other end of the field lens, so that the field lens is arranged at the half mirror In addition, several solutions are designed to meet different scanning requirements for the full mirror group. The invention designs a planetary gear transmission group, realizes the independent movement of the rotation direction, simplifies the control of the transmission system, is convenient to operate, improves the movement precision, and also designs another structural layout, so that the full mirror group can use a The total reflection mirror with increased mirror area can expand the scanning range. In addition, a zoom system and a laser ranging system are added to make the 3D laser scanning head have corresponding functions.

A scanning device including a base, a guiding module and a scanning head is provided. The guiding module includes a guiding rod, a guiding element, a sliding element and an elastic element. The guiding rod is fixed to the base. The guiding element has a notch, wherein the guiding rod is slidingly disposed at the notch along a first axial direction. The sliding element is slidingly disposed at the guiding element along a second axial direction substantially perpendicular to the first axial direction. The elastic element is fixed to the guiding element and contacts with the sliding element, wherein the sliding element pushes the guiding rod to contact an inner wall of the notch along the second axial direction by an elastic force of the elastic element, so as to prevent the guiding rod from swaying during a scanning process.

A scanner including a casing, a scanning platform, a scanning module and a positioning plate is provided. The scanning platform is embedded in the casing and exposes a surface to carry a to-be-scanned document. The scanning module is disposed under the scanning platform. The positioning plate disposed on an inner wall of the casing is adjacent to a top side of the scanning platform. The scanning module is for capturing images of the positioning plate and the inner wall and for identifying the image corresponding to one x-axis side of the positioning plate. The scanner defines a scanning start line according to the image corresponding to the x-axis side. The scanning module is moved from the scanning start line along a y-axis direction and captures an image of the to-be-scanned document. The x-axis side and the scanning start line are perpendicular to the y-axis direction perpendicular to the top side.

A dual-slope light guide includes a first surface, a second surface and a curved surface. The first surface has first reflecting structures. The second surface, connected to the first surface, has second reflecting structures. An included angle between the first surface and the second surface is unequal to 180 degrees. The curved surface connects the first surface to the second surface. The first surface, the second surface and the curved surface extend from a first end of the light guide to a second end of the light guide. A light beam incident to the first end of the light guide is reflected and converted by the first reflecting structure and the second reflecting structure into linear light emitted from the curved surface. A light source module and an optical assembly for a scanner are also disclosed.

The invention relates to the field of manufacturing of semiconductors, and in particular relates to a light spot suppression method in bright field defect scanning. The light spot suppression method in bright field defect scanning comprises the following steps of: collecting and analyzing light spots generated by a semiconductor device subjected to defect scanning in real time, timely converting the real-time light spot information into a light spot graph, manufacturing a light spot blocking plate with a matched shape according to the light spot graph, and performing a defect detection process according to the light spot blocking plate. Therefore, the influence of the unexpected light spot graph on the process progress can be effectively avoided, the influence of the light spots on the defect detection process is effectively suppressed, and the scanning quality is greatly improved, so that the scanning sensitivity of a cabinet is guaranteed.

The embodiment of the invention discloses a digital pathological section target area identification method. The method comprises the following steps: acquiring a pathological section scanning image; inputting the pathological section scanning image into a preset recognition model based on deep learning; extracting contour features of the pathological section scanning image through the image contour feature extraction sub-model to obtain a contour image; segmenting the contour image through the image segmentation sub-model to obtain a plurality of sub-contour images; performing classification identification on the plurality of sub-contour images through an image classification sub-model to obtain a region category corresponding to each sub-contour image; the target area image is determinedaccording to the area category of each sub-contour image, so that the scanning efficiency and the scanning quality of the pathological section are improved, the accuracy of the target area image is improved, and the memory space of the digital pathological section is reduced. In addition, the invention also provides a digital pathological section target area identification system, equipment and amedium.

The invention provides a homing method for a scanning device and a scanning module thereof. A positioning plate of the scanning device is arranged on the inner wall of a shell; the scanning module indentifies at least one X axis side image corresponding to the positioning plate and determines a starting line for scanning according to the X axis side image. The homing method identifies at least one X axis side image corresponding to the positioning plate by capturing images between the positioning plate and the inner wall of the shell of the scanning device and determines the starting line of scanning according to the X axis side image and captures the image of a document to be scanned by moving along a Y axis direction from the starting line for scanning. The scanning module of the invention can accurately carry out homing and positioning, thus completely capturing the image of the document to be scanned and correspondingly improving the quality of the scanning. Meanwhile, a monochromic positioning plate can be adopted and the positioning plate does not need to set patterns in a manner of printing, therefore the cost and complexity of the production are lower than those of the traditional positioning structure, which is also beneficial for improving the facilitation and precision of the identification of the scanning module.