32results about How to "Satisfy image quality requirements" patented technology

The invention relates to a car mirror flaw online automatic detection device and method based on double stations. The device mainly comprises an air knife drying system and an image detection system. The air knife drying system and an air purifying chamber are sequentially installed at the rear end of a cleaning device of a mirror surface production line, and the whole image detection system is installed in the air purifying chamber. The detection stations are arranged in the sealed air purifying chamber, and a detection device of the first detection station is composed of a line scanning CCD, a lens, a linear light source and a photoelectric encoder to detect flaws, such as scratches (internal and external scratches) and pits, of the mirror surface. The second detection station is composed of an area array CCD, a lens and a backlight source. By means of the backlight illumination mode, car mirror images are obtained to detect the flaws of mirror surface light leakage, edge cracking and the like. The obtained images are processed through a computer to achieve intelligent car mirror flaw detection. The car mirror flaw online automatic detection device can replace workers, car mirror production quality can be quickly and automatically detected, and production efficiency and quality of car mirrors are improved.

The present invention relates to an image processing method and apparatus, a storage medium and a computer device. The method comprises: acquiring multi-frame images obtained by collecting a target, wherein the exposure of each of the images is different, and the exposure comprises the target exposure, the first exposure higher than the target exposure, and the second exposure lower than the target exposure; correcting pixel values in each of the images to obtain a corrected image corresponding to each of the images respectively; according to the encoding mode matched by the exposure of each of the images, encoding each of the images and the corresponding corrected image to obtain a coded feature map group corresponding to each of the images; and decoding a spliced feature map group obtained by splicing each of the coded feature map groups, and obtaining a target image corresponding to the image corresponding to the target exposure, wherein the contrast of the target image is higher than the contrast of the image. According to the scheme provided by the present application, image processing efficiency is improved.

The invention discloses a projector-based quantitative background schlieren method temperature measuring device and method, and the device and method are used for measuring the density and temperature of a flow field. Based on the principle that a background schlieren method is used for measuring medium physical property parameters, a projector is used for generating random background points to serve as a light source to replace original printing background points and background light sources. The experimental device is composed of a background point generation device, a projection system, an imaging system and an image processing device. According to a traditional background schlieren method, different background points need to be printed under different experiment conditions to guarantee the measurement precision, additional background light source illumination is needed, the experiment process is tedious, and experiment devices are complex. According to the invention, the projection pattern is used for replacing the printing background point, the background pattern can be directly generated according to the measurement requirement to ensure that the resolution of the background point is matched with the resolution of the camera, and the defect that different background points need to be printed for different experimental devices is overcome. Meanwhile, the projector provides sufficient background light intensity while providing background points, so that the cost is saved while the imaging quality requirement is met.

A liquid electronic ink receiving medium comprises a support body and an ink receiving layer on one side or both sides of the support body. The ink receiving layer comprises, by weight, 30-60 parts of inorganic particles (a), 30-65 parts of an adhesive (b) and 0.03-10 parts of a curing agent (c). The inorganic particles are cationic inorganic particles. The adhesive is selected from one or more of water-soluble resin and binary or polybasic water-dispersible type copolymer emulsion. The liquid electronic ink receiving medium is smoothly conveyed on an HP Indigo series printing press without the paper jamming problem, the printed image is bright in color, the inking capacity is good, the printing ink fastness is good, and the image-stage image quality requirement is met.

The invention discloses an SAR azimuth parameter control method and device and a storage medium. The method comprises that the azimuth scanning angle speed of each subband in the range direction in aTopSAR mode is determined according to relation between orientation resolution in the strip mode and orientation resolution in the TopSAR mode; imaging time length and regression time length of each subband are determined on the basis geometric splicing relation between two adjacent imaging areas in the azimuth of the same subband in the TopSAR mode; an azimuth scanning angle corresponding to eachsubband is determined according to the azimuth scanning angle speed and the imaging time length of the corresponding subband; and the azimuth imaging length of each subband is determined according tothe imaging time length of the corresponding subband. The imaging quality requirement for images in engineering application can be met, and the azimuth parameters in the TopSAR mode can be determinedrapidly according to geometric splicing relation of two adjacent imaging areas.

The invention relates to a low-cost light-small medium-wave infrared continuous zooming optical system, which is characterized in that: in an optical axis direction determined on a medium-wave infrared light path radiated by a scenery target, a positive focal power meniscus lens serving as a front fixing group, a negative focal power biconcave lens serving as a zoom group, a positive focal power biconvex lens serving as a compensation group, a non-focal power plane mirror, a non-focal power plane mirror, a positive focal power meniscus lens serving as a relay group and a refrigeration medium wave detector are sequentially arranged from an object side to an image side, and light is imaged on a focal plane of the medium-wave refrigeration detector. The 10-time continuous zooming function of an infrared optical system is achieved, the number of lenses is reduced, the axial size of the system is shortened, the weight and cost are reduced, 100% cold screen efficiency is achieved, the imaging quality is improved, good imaging quality is kept within the range of -40 DEG C to 60 DEG C, and athermalization, low cost, light weight, small size and high performance are achieved.

The invention is suitable for the field of optical lens, and aims to provide a camera lens for a projector, comprising a first lens, a second lens, a third lens, a fourth lens and a fifth lens sequentially arranged from an object direction to an image direction. The lens adopts glass and is a spherical lens; the first lens and the second lens are falcate lenses concave to the image direction; a lens protruding to the image direction is formed by adhering the third lens and the fourth lens together; and the fifth lens is a biconvex lens. Because the lens of the camera lens for the projector totally adopts a spherical design, various phase differences can be corrected through optimizing spherical coefficients such as spherical radius of curvature, intervals between lenses and thickness of the lenses so as to ensure that the camera lens for the projector reaches the demand of imaging quality. In addition, the lens made of glass can improve brightness and strengthen the light transmittance so as to obtain favorable imaging quality, reach the requirement of high resolution and small volume and reduce cost of the camera lens for the projector.

The invention relates to a high-precision temperature measurement and control method based on double feedback, and the method comprises the steps: 1, temperature collection: providing constant-current drive for a temperature sensor through a constant-current drive temperature measurement part circuit, and designing a double-feedback temperature measurement mechanism to collect data, including main and auxiliary feedback temperature data; 2, temperature measurement data conditioning: extracting and amplifying the junction voltage of a temperature measurement diode by adopting two-stage amplification of a specific temperature zone, and completing two-stage amplification conditioning of temperature measurement data; 3, carrying out analog-to-digital conversion and digital filtering; 4, identifying the model; and 5, temperature control: designing a parallel control switching scheme to select temperature measurement data, optimizing a temperature control algorithm and performing fixed-point processing on algorithm parameters, and evaluating a high-precision temperature control effect of a real controlled object according to temperature control precision. The dual feedback provides dual reliability guarantee for the feedback source of the temperature control system, in addition, the anti-interference capability of temperature measurement is also improved by the nearest digital scheme of the main feedback, and high-precision temperature measurement assistance is provided for the high-precision temperature control effect.

The invention provides a compound imaging simulation optical system which is mainly composed of a reflection-type infrared optical system and a transmission-type visible light and laser optical system. The compound imaging simulation optical system sequentially comprises a large-aperture reflecting mirror, a first lens, a second lens, and a third lens. By combining the reflection-type optical system and the transmission-type optical system and reasonably matching parameters of the lenses such as material, radius, distance and thickness, the imaging quality requirement (+ / -0.5 degrees) of the infrared optical system and the observation range requirement (+ / -5.5 degrees) of the visible light and laser optical system can be satisfied, and the performance demand of a three-in-one common-aperture optical system is ultimately achieved. The overall size of the whole system device is minimized, and the overall requirement of the whole system device is met.

The invention discloses a turning lens cone assembly based on a rolling and pitching platform and an assembling and adjusting method thereof. The assembling and adjusting methodcomprises the following steps of firstly, respectively assembling and adjusting a rolling and pitching frame platform part, a secondary lens cone assembly, a first reflector base assembly, a second reflector base assembly and a third reflector base assembly, assembling and adjusting all the assemblies, and then conducting overall joint debugging and convergence. The mechanical assembling and adjusting of the rolling and pitching frame platform part are carried out under the conditions that a rolling frame rotating shaft and a pitching frame rotating shaft can freely and easily rotate, clamping stagnation is avoided, and a frame is gapless, and the assembling and adjusting of the rolling and pitching frame platform part can be realized by assembling and adjusting the coaxiality and the gap of a frame bearing under the condition that the part machining precision meets the design precision; a rolling and pitching frame platform component is assembled and adjusted, and the purpose is to coincide an incident visual axis of a rolling optical system and a rotating shaft of a rolling frame; the center of the optical axis of the first right-angle reflex needs to coincide with the rotating shaft of the pitching frame; through second, third and fourth times of right-angle refraction and reflection, the center of the light is always on the intersecting plane of the pitch axis and the rotating shaft of the rolling frame; and the center of the optical axis is returned to the coincident direction of the rolling and pitching axis through four times of right-angle reflex.

The invention provides a small-distortion monitoring optical lens which has high detail resolution capability in a small field of view, is short, small and light in weight, has small distortion and stable environmental adaptability, can realize effective control of ghosting, and meets the imaging quality requirement of a monitoring lens. The small-distortion monitoring optical lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side surface to an image side surface along an optical axis, and is characterized in that the first lens has positivefocal power, and the object side surface of the first lens is a convex surface; the second lens has negative focal power, and the object side surface of the second lens is a concave surface; the third lens has positive focal power, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface; and a color filter, protective glassand IMA are sequentially arranged behind the image side surface of the fourth lens.

The invention discloses a dynamic star simulator projection optical system with an athermalization function. The system comprises a diaphragm, a lens cone and a star point display device, wherein thediaphragm is matched with an entrance pupil of a star sensor; the star point display device is installed at the tail end of the lens cone; and a first lens, a second lens, a third lens, a fourth lensand a fifth lens are sequentially and coaxially arranged in the lens cone from the front end to the tail end; the first lens is a biconvex lens, the second lens is a biconvex lens, the third lens is abiconcave lens, the fourth lens is a meniscus lens of which the convex surface faces the diaphragm and the fifth lens is a meniscus lens of which the concave surface faces the diaphragm. The inter-satellite angular distance error precision of a simulated star point is high and is superior to 2'', and under actual use, the image quality of the optical system can be kept stable at different temperatures, so that the ground test and calibration requirements of a high-precision star sensor at different temperatures are met.

The invention relates to the technical field of radio frequency channel calibration, and discloses a double-calibration-antenna radio frequency channel calibration method for millimeter wave securitycheck imaging, and the method comprises the steps: respectively obtaining calibration test data through two external calibration antennas which just need to roughly estimate the positions; and throughmutual calibration and related analysis processing between the two groups of calibration test data, accurately calculating the position coordinates of the two calibration antennas, and thus completing calibration of the radio frequency receiving / transmitting channel. According to the double-calibration-antenna radio frequency channel calibration method for millimeter wave security check imaging,the position coordinates of the calibration antennas do not need to be directly measured, the positions of the calibration antennas are accurately obtained through data statistical analysis, the positioning precision is high, so that the calibration result of the radio frequency receiving / transmitting channel of a corresponding system can meet the imaging quality requirement.

The invention provides a comprehensive optical monitoring system, which comprises a telescope, an ultraviolet UV spectrometer, an ultraviolet visible UVIS spectrometer, a near-infrared NIR spectrometer and a short wave infrared SWIR spectrometer; the filed of view of the telescope is greater than 100 DEG; the working band of the telescope covers the outer band, the visible band, the near-infraredband and the short waved infrared band; the UV spectrometer, the UVIS spectrometer and the NIR spectrometer use the raster to divide light; the SWIR spectrometer uses the immersion raster to divide light; and, the UV spectrometer, the UVIS spectrometer, the NIR spectrometer and the SWIR spectrometer share the telescope. The application provides a comprehensive optical monitoring system with wide spatial coverage area, high spatial resolution, wide band and high spatial resolution.

The embodiment of the invention provides a method and device for training an image enhancement model, equipment and a storage medium, and the method for training the image enhancement model comprises the steps: obtaining a training sample set, wherein the training sample set comprises a plurality of training sample images; adopting a preset target neural network model to respectively extract local features of the plurality of training sample images and global features of the plurality of training sample images; matching the local features and the global features of the plurality of training sample images in series to obtain combined features of the plurality of training sample images; training a target neural network model based on the combined features of the plurality of training sample images to obtain an image enhancement model; according to the embodiment of the invention, the technical problem that the image or video shot under the condition of insufficient illumination cannot meet the image quality requirement of an image processing algorithm for automatic driving in the prior art can be solved.

The invention discloses a thin film uniformity detection system based on linear structured light. The thin film uniformity detection system comprises an imaging unit, an acquisition unit, a processing unit, a storage unit and a control unit, wherein the imaging unit is used for generating a grid image and sequentially comprises a light source, an optical filter and a grid diffraction grating, light emitted by the light source passes through the optical filter to adjust the light intensity and wavelength of the light source and then passes through the grid diffraction grating to be diffracted and split, and continuous grid light spots are formed and projected to a measured area of the thin film; the acquisition unit comprises an objective table and a plurality of line-scan digital cameras, and is used for acquiring the grid image and carrying out multi-camera calibration; and the processing unit is used for identifying the grid image by adopting a preset film uniformity detection model and detecting whether the grid image is distorted so as to realize film uniformity consistency judgment. According to the invention, the problem of many isolated noise points of the collected surface reflective film image can be solved, and uniformity detection of the film surface is realized.

The invention relates to an X-ray detector, an X-ray medical system and an operation method of the medical system. The X-ray detector for receiving an X-ray comprises a housing; a detector body, wherein the detector body can be accommodated in the housing; an electronic display layer overlying at least a portion of the surface of the housing; and an electronic display layer driving device coupledto the electronic display layer and capable of driving the electronic display layer to display the dynamic information. The X-ray detector is more convenient for the operation of the medical staff, improves the inspection efficiency, and improves the patient experience. meanwhile, a flexible electronic ink layer selected in the present invention can be disposed in an optical path of the X-ray without any influence on the image formed by the X-ray, the obtained image does not require additional image processing such as artifact removal, and the image quality requirements can be satisfied.

The invention relates to a seven-piece type large-aperture high-pixel optical imaging lens. The seven-piece type large-aperture high-pixel optical imaging lens sequentially comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side; the optical imaging lens satisfies the following relational expressions: f1 / |f2|<0.5, 1<(R1+R2) / (R3+R4)<2.5, and R10 / f<3; and f1 is the focal length of the first lens, f2 is the focal length of the second lens, R1 is the curvature radius of the object side surface of the first lens, R2 is the curvature radius of the image side surface of the first lens, R3 is the curvature radius of the object side surface of the second lens, R4 is the curvature radius of the image side surface of the second lens, R10 is the curvature radius of the object side surface of the fifth lens, and f is the focal length of the optical imaging lens. According to the seven-piece type large-aperture high-pixel optical imaging lens, the high imaging quality can be maintained under the conditions of effectively shortening the system length and improving the pixel.

The invention belongs to the technical field of active optics, and particularly relates to a spliced mirror pose test system and method based on a scanning galvanometer. The system comprises a transmitting unit, a receiving unit, a detecting unit and a correcting unit. The testing system is simple in structure, high in integration and beneficial to equipment building and personnel testing. The whole system is stable, the adjusting efficiency is high, and system errors can be reduced to a great extent; the emitting unit emits collimated and beam-expanded light; a first beam splitter of the receiving unit receives the collimated and expanded light, a second lens diverges the collimated and expanded light, and a scanning galvanometer receives the collimated and expanded light and reflects the collimated and expanded light to a splicing mirror; a second beam splitter of the detection unit receives the reflected light and splits the reflected light, wherein one beam is transmitted to an S-H sensor, and the other beam is reflected to a CCD camera; the correction control unit receives the wavefront phase information and corrects the mirror surface type of each spliced mirror through algorithm feedback, and the test system completes the space pose test and correction of each spliced mirror of the reflector and meets the imaging quality requirement.