82results about How to "The imaging effect is clear" patented technology

The invention relates to compounds represented by the formula I, IIa, IIb, III, and IV and manufacturing methods thereof; wherein Ar1 stands for substituted o-arylidene or substituted o-heteroarylidene; Ar2 represents dual o-arylidene or dual o-heteroacylidene connected in various forms; Y1 represents O, S, NR20, BR20, CR15, R16, SiR15R16, S=O, or C=O; Z1 represents a straight bond, a C1-C10

The invention discloses a whole-process automatic attendance system used in a classroom. The whole-process automatic attendance system comprises a collecting system, an analyzing system and a statistical system, wherein the collecting system comprises cameras; four cameras are arranged in total and are respectively arranged at left upper corner and right upper corner on the front side of the classroom, above the left wall of the classroom and above the right wall of the classroom; the analyzing system comprises a database, in which the face standard data of attendance people are stored in advance, and is used for comparing the real-time images collected by the cameras with the pre-stored data in the database and then sending a comparison result to the statistical system; the statistical system is used for generating a report for the attendance people according to the comparison result. The invention has the beneficial effects that the accuracy is higher and the whole-process attendance recording for people in the classroom can be accurately performed.

The invention relates to an asymmetric dioxime ester compound shown as general formula I and a making method thereof. In the general formula I, Ar1 is X1 substituted C6-C20 o-arylene or C3-C20 o-heteroarylene; Ar2 is C6-C20 arylene or C3-C20 heteroarylene, is connected to Ar1 through X1, or at the same time of connection to Ar1 through X1, the Ar2 carbon atom adjacent to the substituent group X1 is in connection with Ar1 through an axial bond, carbon atom, carbonyl, O, S and NR18 to form a cyclic structure; n is 0 or 1; X1 is NR18, O, S, C=O or S=O; Y1 is (CH2)mCR15R16, NR19, O(CR15R16)m, S(CR15R16)m, (CR15R16)m C=O, S=O; m is 0 or 1; R1, R2 and R3 are respectively hydrogen atom, alkyl or alkoxy, arbitrary group substituted alkyl or alkoxy, cycloalkyl, arbitrary group substituted aryl, and acyl. The invention also relates to a photocurable composition with the general formula I compound as the photoinitiator. The composition is used for preparation of photoresist devices like color filters for display screens, and shows very high curing sensitivity. (formula I as shown in the specification).

The invention discloses a sample preparation method employing an AFM (Atomic Force Microscope) for single antibody molecule imaging, a single antibody molecule IgG AFM imaging method and a DNA origami combined with antibody molecule IgG. The preparation method includes (1) mixing and reacting the DNA origami coupled with micromoleculeantigen at the edge with antibody of the micromoleculeantigen, wherein the micromoleculeantigen includes two identical micro molecules coupled to the edge of the DNA origami and spaced from each other by about 8-15 nanometers; (2) dropwise adding a reaction product on a newly-dissolved mica plate for adsorbing and imaging, and adding a buffer solution. Therefore, a sample is obtained. The preparation method provided by the invention is simple and convenient in operation. The antibody molecule IgG is absorbed on the mica surface with the aid of the DNA origami in a liquid environment, so that solid liquid interphasecapillary force effect on the antibody molecule IgG can be avoided and influence of a pinpoint effect on the antibody molecule IgG structure is reduced; and the imaging effect is improved.

The invention discloses novel radioactive 18F labeled aromatic amino acids, which is characterized in that one end of the acids is provided with F substituted alkoxy benzoyl structure, and the other end of the derivatives is provided with alpha-amino acid structure; substituent R1 is positioned on an alpha site of carboxyl group and is phenyl group, benzyl group or 3-indole methyl group; R2 is methoxyl group; and n is a number between 1 and 5. The substituent R1 is positioned on an alpha site of carboxyl group and is phenyl group, benzyl group or 3-indole methyl group; the R2 is methoxyl group; and the n is a number between 1 and 5. Compounds improve fat solubility. Different amino acid structures are introduced into the structure, and F in the structure is 19F and 18F. The substituent R1 is positioned on an alpha site of carboxyl group and is phenyl group, benzyl group or 3-indole methyl group; the R2 is methoxyl group; and the n is a number between 1 and 5. The substituent R1 is positioned on an alpha site of carboxyl group and is phenyl group, benzyl group or 3-indole methyl group; the R2 is methoxyl group; and the n is a number between 1 and 5. Compared with the prior art, the 18F labeled amino acid derivatives provided by the invention have better discrimination degree of biological distribution, the potential of being used as a tumor imaging agent (particularly a brain tumor imaging agent), as well as the characteristics of simple preparation and high labeling rate.

The present invention relates to a diketoxime ester compound represented by a formula I, and a preparation method thereof, and a photocurable composition using the compound represented by the formulaI as a photoinitiator. According to the present invention, with the application of the photocurable composition in the preparation of photoresist devices such as display screen color filter, the highexposure sensitivity and the relatively low yellowing property are achieved. The formula I is defined in the specification.

The invention relates to a vehicle-mounted digital television signal processing method which respectively comprises steps of processing for video signals and the processing for audio signals. The processing for video signals comprises the following steps: (1) detecting moving regions: firstly, uniformly dividing all image frames into 36 blocks (6 lines and 6 rows), calculating the color attributeaverage value of each pixel point in each block one by one, and comparing the obtained color attribute average value with the color attribute average value of each pixel point of the corresponding block of the previous image frame, wherein if the difference value of the color attribute average values of the two blocks is smaller than the threshold value, the block is a static block, and if the difference value of the color attribute average values of the two blocks is not smaller than the threshold value, the block is a moving block, and all adjacent blocks of the block are moving blocks; (2)processing the static blocks in the image frames by average filtering; and (3) processing the moving blocks in the image frames by time-domain noise reduction. The vehicle-mounted digital television signal processing method processes the video signals by self-adapting noise reduction, thereby effectively reducing the noise, avoiding the loss of space details and improving the output effect of thevideo signals.

The invention relates to a structural tomography process based on a chart control, which can be conveniently used for concrete tomography under a visual development environment, thereby solving the problems that the existing structural tomography is expensive in price, inconvenient to use, bad in imaging effect and is not high in quality. The method is as follows: using a microcomputer and an inverse distance weighted interpolation algorithm to conduct preprocessing on data, namely performing interpolation encryption preprocessing for the inversion data, and then setting up the chart control; placing two chart controls on a development environment window to obtain a window control, using the chart control and the microcomputer to generate a contour map and a cloud chart, and then loading the data, respectively transmitting the data to a contour line type curve and a cloud chart type curve through a data loading process after the window control is set up and the imaging data interpolation is encrypted, implementing data loading and imaging, and performing a true coordinate labelling and grid line value drawing. According to the method provided by the invention, the operation is simple and easy, the application effect is good, the imaging effect is clear, the positioning is accurate, and the structural tomography requirements can be met effectively.

The invention discloses a mobile screw locking tool, which includes a mechanical arm, a bracket installed on the mechanical arm, a positioning mechanism and a locking screw mechanism fixed on the bracket, and the positioning mechanism and the locking screw mechanism are installed on the bracket at a certain angle. The positioning mechanism is used to scan the workpiece and determine the position of the screw hole. The locking screw mechanism is used to introduce and tighten the screw. The positioning mechanism is fixed by the positioning plate and the bracket. The locking screw mechanism is fixed by the back plate and the bracket. It is also equipped with a moving mechanism. The invention scans the workpiece through the positioning mechanism of the mechanical arm, which can quickly and effectively detect the screw holes without adjusting the machine, and has a wide range of applications. Using the detection results of the positioning mechanism, the work efficiency is high and the labor cost is saved.

The invention provides an image display method and system. The image display method applied to a terminal comprises that if an image obtaining instruction is received, first and second cameras of the terminal are started; first image information collected by the first camera is combined with second image information collected by the second camera to obtain combined image information; and a display screen of the terminal displays the combined image information. Thus, image information of multiple users can be collected, and the imaging effect in displaying images of multiple users can be improved.

The invention is suitable for the technical field of medical equipment and provides an adjusting method and device for the working distance of a colposcope. The method comprises the steps that a lens of the colposcope is controlled to collect an image; the collected image is subjected to brightness uniformity analysis so as to determine whether the brightness uniformity of the collected image meets a preset condition or not; if the brightness uniformity of the collected image does not meet the preset condition, the working distance of the colposcope is adjusted by a preset distance value, and the operation of controlling the lens of the colposcope to collect an image is carried out again until the brightness uniformity of the collected image meets the preset condition. It is ensured that the imaging effect of the colposcope is clear, and the working distance of the colposcope does not need to be manually adjusted by medical personnel in the whole process, so that the operation efficiency of the colposcope is improved, and the accuracy of information determination is improved through the clear image.

The invention relates to an optical system, an image capturing module and an electronic device. The optical system comprises the following components in an order from an object side to an image side:a first lens element with positive refractive power; a second lens element with refractive power; a third lens element with negative refractive power; a fourth lens element with positive refractive power, wherein the third lens element is cemented to the fourth lens element; and a fifth lens element with positive refractive power. The optical system satisfies the conditional expression that FNO issmaller than or equal to 1.9, wherein FNO is the number of apertures of the optical system. According to the optical system, when the conditional expression is met, the large-aperture characteristicof the optical system can be realized, so the luminous flux of the optical system is improved.

The invention provides a camera shooting lens group of a robot for monitoring camera shooting. Good balance between the light beam effect and the imaging definition can be obtained, and the camera shooting lens group has the advantages of being large in light field and image plane, clear in imaging effect and the like. The invention also provides the robot for remote wireless monitoring. The robot has the excellent camera shooting effect, and observation at various angles and in various directions is achieved through up-and-down and left-and-right movement of the camera shooting lens group.

The invention relates to an 8 mm day-night dual-purpose large-light-transmission large-target-surface prime lens, which is characterized in that the optical system of the lens comprises a front lens group A with negative focal power and a rear lens group B with positive focal power which are sequentially arranged from front to back along an incident light path, the front lens group A comprises a negative meniscus lens A-1, a negative meniscus lens A-2 and a positive meniscus lens A-3 which are sequentially arranged from front to back, and the rear lens group B comprises a biconvex lens B-1, abiconcave lens B-2, a biconvex lens B-3, a negative meniscus lens B-4 and a biconvex lens B-5 which are sequentially arranged from front to back. According to the invention, the lens is simple in structure, reasonable in design, short in total optical path length, small in size, and good in imaging quality; and the F value is extremely small, so that the light flux of the lens is improved, the whole picture is brighter, the performance of the lens in a low-illumination environment is better, a clearer imaging effect is presented, and a day and night universal function is realized.

The invention relates to the technical field of biomedical materials, and specifically relates to a dual-mode tumor imaging nanoprobe suitable for MRI/NIR-II as well as a preparation method and application thereof. The dual-mode tumor imaging nanoprobe suitable for MRI/NIR-II is composed of deioned lactoferrin, Mn<2+>, PEG and CH1055, wherein the deioned lactoferrin is a vector which composes complexes with the Mn<2+> and couples with amino groups on the PEG as well as carboxyl groups on the CH1055; and the molecules are cross-linked by formyl groups and amino groups. The dual-mode tumor imaging nanoprobe suitable for MRI/NIR-II disclosed by the invention is a brand new compound feasible for dual-mode imaging, and has a fluorescence emission wavelength in the second region of near infrared; moreover, the dual-mode tumor imaging nanoprobe is non-toxic, good in biocompatibility, and feasible for easy absorption and metabolizsm by organisms. In addition, MR imaging is enabled by complexes with manganese ions so as to allow clear imaging effects. Being entrapped, the dual-mode tumor imaging nanoprobe can be used for detecting-imaging of various diseases, such as tumor and the like.

The invention discloses an automatic overhauling system for urban rail transit vehicles. The system comprises an inspection vehicle device, an automatic boarding ladder device and lifting type trenchplatform devices, wherein the inspection vehicle device comprises a multi-degree-of-freedom mechanical arm and imaging equipment on the mechanical arm; the inspection vehicle device is used for identifying the guide lines of the ground on the two sides of an inspection warehouse track and the bottom of a trench, and inspecting the bottom of the vehicle and the two sides of the vehicle body along the trench and the two sides of a rail; the automatic boarding ladder device is positioned on the side surface of the rail and is used for leading drivers and passengers to normally get on and off thecar when the automatic boarding ladder device rises, and being flush with the ground to avoid passing of the inspection vehicle device when the automatic boarding ladder device descends; the lifting type trench platform devices are respectively arranged at the two ends of the row position of the trench, are flush with the ground when being lifted and flush with the trench bottom when being lowered, and are used for conveying the inspection vehicle device between the trench bottom and the ground. According to the system, manual overhaul can be replaced, missed detection can be effectively prevented, the overhaul time is greatly shortened for being capable of live working, and the operation efficiency of the urban rail transit vehicle is effectively improved.

The invention relates to a three-dimensional imaging device for detecting a human body microvascular ultramicrostructure. The device at least comprises a light source module used for transmitting multiple collimation and parallel emergent lights, a dimming unit used for adjusting the emergent light into circularly polarized light, an array reflection unit used for illuminating multiple emergent lights into a dark-field objective lens according to sequence, a light splitting unit used for partially reflecting and partially transmitting the light, the dark-field objective lens used for intensively illuminating an annular incident light to a focus position, an imaging unit used for imaging, and an image presenting module for presenting images. According to the three-dimensional imaging device, by matching of the array transmission unit, the array reflection unit and the dark-field objective lens, multiple emergent lights split from one light beam sequentially enter the dark-field objective lens, the dark-field objective lens is illuminated by incident lights at different angles on the same position and respectively imaged, and a three-dimensional image of microvessel is obtained by using a photometric three-dimensional measurement method, so that the microvessel density and microvessel shape of a longitudinal section are accurately subjected to digital quantification.

The invention provides an imaging material for fabricating a rear-projection screen, which comprises 40-80 parts of diluent, 30-60 parts of transparent varnish, 10-50 parts of a curing agent, 10-30 parts of optical microparticles, 10-30 parts of a matting agent, 5-30 parts of pigment, 5-20 parts of aluminum powders or metallic paint, 5-15 parts of light stabilizer, 5-10 parts of inorganic flame retardant and 0.2-3 parts of antioxidant. The invention also provides a method for fabricating the rear-projection screen, which comprises the following steps: (1) the imaging material is mixed uniformly and poured into a watering pot of a spray gun; (2) transparent or semitransparent plane, curve or sphere attachment is sprayed with the imaging material; and (3) a film is formed, and the final thickness of the film is 0.05mm-3mm. The imaging material and the method provided by the invention can effectively improve display brightness, visual angle and definition of the existing rear-projection screen, improve the maximum size of the rear-projection screen, and meanwhile reduce the fabricating cost of the rear-projection screen.