43results about How to "Avoid stitching errors" patented technology

The invention discloses a scanning electron microscope direct-writing photoetching system based on a flexible nano servo motion system. The scanning electron microscope direct-writing photoetching system comprises an electron chamber, an ion chamber, a sample chamber and a control system; the electron chamber comprises an electron chamber cavity, an electron gun, an anode, an electron beam blocker, an electromagnetic lens and an electron beam deflection coil; the ion chamber comprises an ion chamber cavity, an ion source, an ion beam scanning deflection electrode and the like; the sample chamber comprises a sample chamber cavity, a secondary electron detector, a nano-precision flexible servo motion platform system and the like; the control system comprises a computer, an electron beam scanning controller, an ion beam scanning controller and the like. The electron beam generated by the electron chamber or the ion beam generated by the ion chamber can be used for nano direct-writing preparation, and the nano-precision flexible motion platform in the sample chamber and the electron beam / ion beam can cooperatively move or be linked, so that splicing errors in preparation are avoided, and large-area nano direct-writing photoetching without splicing errors is realized. The system can also perform in-situ detection in the preparation process, so that the preparation result is convenient to observe in real time.

The invention provides computer imaging type direct plate making equipment and a plate making method. The equipment comprises an exposure light source, a print image imaging device and a printing plate carrying device, which are arranged coaxially; the exposure light source is used for irradiating light to cure a photosensitive material loaded on a printing plate; the print image imaging device is used for forming a target image to replace a film, so as to mask the light from the exposure light source, and thus a corresponding exposure image is formed on the printing plate; to improve the exposure efficiency and the plate making efficiency, the print image imaging device is provided with a light guide layer for trimming non-uniform exposure light to uniform parallel light. Due to the introduction of a light homogenizing layer, dependence on a light source is further reduced, and in particular, good plate making precision can be obtained by combination of light sources with different specifications, light sources or spot light sources with different surface luminescence uniformity and line light sources. A plate making process formed by the plate making equipment can adapt to the plate making requirements of high precision and low cost.

The invention provides printing plate making equipment and a plate making method. The equipment comprises an exposure device, a print image imaging device, a printing plate carrying device and a timing control device, wherein the exposure device comprises an exposure light source and an exposure light source control device; the exposure light source, the print image imaging device and the printing plate carrying device are coaxially arranged in sequence; the exposure light source is used for irradiating light to cure a photosensitive material loaded on a printing plate; the print image imaging device is used for forming a target image to replace a film, wherein the target image masks the light from the exposure light source so that a corresponding exposure image is formed on the printing plate. Therefore, accurate plate making and accurate overprinting are achieved, a film making process is omitted, an environmentally friendly plate making process which reduces the production cost and environmental pollution is formed, and a variety of defects in the prior art, particularly in traditional plate making, CTP and CTcP plate making equipment and corresponding processes are solved.

The invention discloses a digital X-ray image splicing method and system. The digital X-ray image splicing method comprises steps that a first detector and a second detector are arranged in a radiation vision field scope of a same beamer, plane distances from a bulb focus of the beamer to the first detector and the second detector are identical, an overlapping region X is arranged between the first detector and the second detector with intervals; a digital X-ray shooting system starts for exposure for one time, a first DR image of a focus portion is generated on the first detector, and a second DR image of the focus portion is generated on the second detector; the overlapping region X is cut from the second DR image to acquire a third DR image; the first DR image and the third DR image are spliced to acquire a fourth DR image; gray fusion for the splicing region is carried out to eliminate a splicing seam to acquire an image O; the image O is displayed. The method is advantaged in that the spliced image can be acquired through one-time exposure, and thereby a radiation dose and the patient positioning time can be greatly reduced.

The present invention provides a step-by-step splicing 3D printing system and printing method, including a control system and a 3D printer, the control system is connected to the 3D printer through communication, and the 3D printer includes a fixed platform and an upper end of the fixed platform. A lens fixing column and a printing mechanism, the lens fixing column is provided with a lithography lens corresponding to the position of the printing mechanism, an XY-axis movement platform is arranged between the printing mechanism and the fixed platform, and the XY-axis movement The platform includes an X-axis motion mechanism and a Y-axis motion mechanism. Setting up the XY-axis motion platform can ensure high printing accuracy while increasing the printing format through step-by-step splicing, and can effectively solve the splicing error in the splicing process.

The invention relates to the field of image processing, in particular to a real-time splicing method for unmanned aerial vehicle aerial stereo images. According to the splicing method for the unmanned aerial vehicle aerial stereo images, an inter-frame interval of key aerial stereo images is adjusted and extracted in real time according to the overlapping ratio of adjacent to-be-spliced aerial stereo images; a transformation matrix of every two adjacent frames is obtained according to a matching relation between homonymy points of every two adjacent frames, and the serial aerial stereo images are transformed to a coordinate system of reference images; and reference frames are adjusted in real time according to set reference frame adjustment judgment conditions, so that accumulative errors generated in the process that the aerial stereo images are transformed to a coordinate system of the reference frames are dispersed to all frames of images, and the situation that serious distortion of subsequent images is caused by error accumulation is avoided.