47results about How to "Reduce overexposure" patented technology

The present invention relates to the medical field, in particular relates to the practice of percutaneous vertebroplasty where a pair of syringes in the distal extreme of a lengthened hydraulic device, are united by a camera of intermediate connection of larger diameter (pressure exerting body) or modified inverted syringe tube with a bolster, a hydraulic connecting tube of flexible material that transmits the pressure of the smaller diameter manual or impulsion syringe in the proximal extreme of the device toward the intermediate cylindrical larger diameter camera (pressure exerting body), this camera is in an inverted position with regard to the first syringe (fluid control), this intermediate camera has a moving piston longitudinal to the axis of the cylinder that is controlled with the first syringe (manual) and in cooperation with the atmospheric pressure. The injecting syringe loaded with bone cement is coupled with the bolster of the body of pressure, and to the needle that drives the cement toward the interior of the bone. The intermediate camera (pressure exerting body) together with the hydraulic tube and the manual syringe form a hydraulic press system (F / A=f / a) that allows to increase in a potential way the pressure exerted in the first syringe and to make the injection of polymethylmethacrylate (PMMA) at an approximate distance of 1.0 m to 1.5 m.

Disclosed are systems and / or methods that mitigate overexposure of shared content and that facilitate improving security of content in a computing environment. In particular, the systems and methods involves monitoring resource activities such as user interactions (between users and / or between users and resources), email activity, share space activity, shared content activity, distribution lists, contact lists, personnel or organization structures, and the like. Data can be collected as one or more resource activities are monitored and then analyzed to determine where, if any, changes have taken place. For example, if a user has been removed from a distribution list or a user has not accessed the shared content within a time period, a recommendation can be formulated to suggest an adjustment to the affected access rights. Furthermore, the systems and / or methods can be integrated with other applications such as an email client, whereby an out-of-office indicator can leave access rights as they are.

The embodiment of the invention discloses an exposure method. The method comprises the steps: during taking a picture, receiving a photographing instruction of a photographer, and collecting a photographed image by an image sensor; dividing the photographed image into N image regions according to a preset division number, and obtaining N current brightness values corresponding to the N image regions, where N is greater than or equal to 1; according to the N current brightness values, preset bright block threshold and preset corresponding relationship between the image region and photometric weight, determining a current exposure brightness value and a first brightness value corresponding to Mi mage regions that meet the preset bright block threshold in the N image regions, where N is greater than M, and M is greater than or equal to 1; according to the current exposure brightness value, first brightness value, preset average brightness threshold, and preset brightness model, obtaining an adjusted brightness value of the photographed image; and using the adjusted brightness value as an actual exposure brightness of the photographed image for exposure. Therefore, a condition of overexposure can be improved during photographing, as well as improving the quality and effect of the photographed image. The embodiment of the invention further provides a terminal.

The invention discloses an automatic exposure method, which is used for realizing the automatic exposure of an image so as to improve the display effect of the image. The method includes: judging whether the brightness value of the image belongs to a preset brightness interval; when the brightness value of the image belongs to the brightness interval, judging whether there is an overexposed area in the image; when there is an overexposed area, adjusting the automatic exposure parameter value, to reduce the exposure of the image. The invention also discloses a device for realizing the method.

The invention discloses an image acquisition device and an image synthesis method thereof. The image acquisition device comprises an image acquisition module, an image synthesis module, a database and a processing module. The image acquisition module acquires a plurality of temporary images of a scene. The image synthesis module cuts out part of the temporary images so as to connect whole scene temporary images and divides a whole scene temporary image area into a plurality of areas according to at least one threshold and a whole scene luminance histogram of the whole scene temporary images. The database stores a lookup table so as to record a plurality of exposure values. The plurality of exposure values respectively correspond to the luminance value of every area. The processing module reads the plurality of exposure values corresponding to the luminance values, and weight exposure values are acquired by utilizing a relation expression so as to control the image acquisition module to perform whole scene image acquisition according to the weight exposure values.

In an image sensing apparatus and exposure control method, detecting an object that satisfies a certain preset condition from image data obtained by image sensing with an image sensing element, and carrying out photometry on the image data as a whole to acquire an overall photometric value while carrying out photometry on an area of a detected object within the image data to acquire an object photometric value. An exposure value is then determined based on the overall photometric value and the object photometric value, with exposure controlled during image sensing based on the determined exposure value.

The present disclosure advantageously provides apparatus, systems and methods which facilitate estimating and accounting for illumination conditions, viewing conditions and reflectance characteristics for imaged surfaces when performing color measurement, correction and / or transformation in an imaging process, such as photography. Advantageously, the disclosed apparatus, systems and methods may utilize a set of one or more illumination target elements for extrapolating illumination conditions from an imaged scene. The disclosure may be used to improve determination of color correction / transformation parameters and / or to facilitate determining a reflectance model for a target surface of interest.

It is an object of the present invention to provide an observation unit which efficiently cools apparatus members in a reaction chamber of a semiconductor manufacturing apparatus in a high-temperature atmosphere and reduces overexposure. An observation unit comprising: an imaging apparatus for imaging the inside of a reaction chamber of a semiconductor manufacturing apparatus in an atmosphere of a high temperature; a housing case which houses the imaging apparatus and is attached with a translucent member which guides an optical image of the inside of the reaction chamber to the imaging apparatus; and a cooling medium supplying apparatus for supplying a cooling medium to the inside of the housing case, wherein the translucent member is a silica glass plate having a gold film on both sides or one side.

The invention discloses a close-range shooting method, a terminal and a computer readable storage medium. By obtaining the light intensity of an object to be shot in a current shooting frame, when light compensation is needed, a light compensation strategy is determined according to the light intensity, and a display screen on a surface where camera is located is controlled to display the light according to the light compensation strategy. In this way, the light compensation is performed through the display screen on the surface where camera is located, so that exposure compensation can be performed during the shooting of a front camera. For some terminals with display screens on the back surfaces, as the compensation light is from the display screen during the exposure compensation, the displayed light is softer than that of flash light, in this way, the influence to the background environment brightness of the current shooting environment is small, the probability of overexposure orunderexposure is reduced, meanwhile the irritations caused to human eyes are also reduced, the imaging quality is improved, and the user experience is improved.

Systems and / or methods that mitigate overexposure of shared content and that facilitate improving security of content in a computing environment are provided. In particular, the systems and methods involves monitoring resource activities such as user interactions (between users and / or between users and resources), email activity, share space activity, shared content activity, distribution lists, contact lists, personnel or organization structures, and the like. Data can be collected as one or more resource activities are monitored and then analyzed to determine where, if any, changes have taken place. For example, if a user has been removed from a distribution list or a user has not accessed the shared content within a time period, a recommendation can be formulated to suggest an adjustment to the affected access rights. Furthermore, the systems and / or methods can be integrated with other applications such as an email client, whereby an out-of-office indicator can leave access rights as they are.

In an image sensing apparatus and exposure control method, detecting an object that satisfies a certain preset condition from image data obtained by image sensing with an image sensing element, and carrying out photometry on the image data as a whole to acquire an overall photometric value while carrying out photometry on an area of a detected object within the image data to acquire an object photometric value. An exposure value is then determined based on the overall photometric value and the object photometric value, with exposure controlled during image sensing based on the determined exposure value.

The invention discloses a positioning device and positioning navigation algorithm of a robot based on the infrared visual technology. The positioning device comprises infrared image collecting equipment and a positioning control module for receiving information of the infrared image collecting equipment. The infrared image collecting equipment is composed of an infrared signal lamp, an infrared camera and a positioning star target located on the infrared camera and used for reflecting infrared rays. The infrared camera is provided with an infrared lens, an infrared light-emitting tube arranged around the infrared lens, and an infrared camera circuit board arranged below the infrared light-emitting tube. Overexposure of the camera on infrared light is reduced, and the influence of ambient light and movement on photo taking is reduced; by means of correction of parameters of the infrared collecting equipment, the influence of the ambient light can be effectively reduced; due to the fact that the algorithm efficiency of a visual processing system is improved, the influence of residual shadows generated during movement can be effectively reduced. By means of the algorithm, the actual errors of a body reaching a target point during navigation are reduced within the acceptable range.

The invention discloses a face recognition device with the anti-shake and dust-proof functions. The face recognition device comprises a camera body, a mounting platform and a support body, and furthercomprises a controller and a marker post which is parallel to a hydraulic rod; the bottom of the mounting platform is fixed to the support body; the mounting platform is a rectangular box; the camerabody is located in the rectangular box; a plurality of supplementary lighting lamps are uniformly arranged on the end surface of an opening of the rectangular box; the support body comprises the hydraulic rod and a hydraulic driving system which are connected to each other; the top end of the hydraulic rod is fixed to the bottom end of the rectangular box; three sets of ultrasonic sensing probesare arranged on the marker post in the axial direction of the marker post; and all the ultrasonic sensing probes and a motor of a driving pump in the hydraulic driving system are connected to the controller through wires. The face recognition device has the advantages that the height of a support can be automatically adjusted according to the height of each person, so that exposure dead angles oroverexposure areas can be reduced, and therefore the face recognition security check efficiency can be improved.

The invention discloses an image processing method. The method comprises: obtaining a first exposure time set by a user; determining a second exposure time, wherein the second exposure time is less than the first exposure time, and the first exposure time is a moment when a photographing target begin to occur an overexposure phenomenon; obtaining N pictures of the photographing target within the second exposure time, wherein N is an integer greater than 1; and carrying out gain compensation processing on the N pictures, and integrating the N pictures after the gain compensation processing to obtain a target picture. The embodiments of the invention further provide a mobile terminal. By adopting the image processing method disclosed by the embodiments of the invention, picture fuzziness caused by insufficient exposure and the overexposure phenomenon caused by too long exposure can be avoided to improve the picture quality.

The invention discloses an image processing method. The method comprises the following steps: obtaining a first exposure time set by a user; determining a second exposure time, wherein the second exposure time is less than the first exposure time, and the first exposure time is a moment when a shooting target object starts to occur an overexposure phenomenon; obtaining N images of the shooting target object at the second exposure time, wherein the N is an integer greater than 1; and performing gain compensation processing on the N images, and integrating the N images subjected to the gain compensation processing obtain a target image. The embodiment of the invention further provides a mobile terminal. By adoption of the image processing method provided by the embodiment of the invention, the problems that the images are unclear due to insufficient exposure and that the overexposure phenomenon occurs due to overlong exposure can be avoided, and then the image quality is improved.

Computer-based systems, software, and computer-implemented methods for creating an index of securities based upon various data transformations of risk factor metrics regarding entities or securities associated with the entities and weighting each index member in proportion to its combined transformed weighting value.

The invention belongs to the technical field of medicines, and particularly relates to a valaciclovir hydrochloride tablet and a preparation method of the valaciclovir hydrochloride tablet. The preparation method comprises the following steps of adding valaciclovir hydrochloride, a first filler and an adhesive into a fluidized bed for fluidized bed granulation to obtain core particles; and mixing the core particles with a second filler, a disintegrating agent and a lubricant, and performing tabletting to obtain a valaciclovir hydrochloride tablet core. According to the preparation method of the valaciclovir hydrochloride tablet, the fluidized bed granulation is adopted; compared with a wet granulation process, the fluidized bed granulation has the advantages that the process steps are reduced, and the production efficiency is improved; and moreover, the whole process is completed in the fluidized bed, so that continuous industrial production is facilitated, excessive contact between raw material components such as the valaciclovir hydrochloride and the like and water is reduced, the influence of excessive water on the crystal form of the valaciclovir hydrochloride is avoided, and the stability of the valaciclovir hydrochloride is improved.

The invention discloses a synthesis method of captan or folpet, which comprises the following steps: uniformly mixing 1, 2, 3, 6-tetrahydrophthalimide or phthalimide, perchloromethyl mercaptan, an organic solvent and a catalyst to obtain a mixture a; or uniformly mixing 1, 2, 3, 6-tetrahydrophthalimide or phthalimide, an organic solvent and a catalyst to obtain a mixture b; dropwise adding an inorganic alkali aqueous solution into the obtained mixture a, and after dropwise adding, carrying out heat preservation for reaction to synthesize captan or folpet; or respectively dropwise adding perchloromethyl mercaptan and an aqueous solution of inorganic alkali into the obtained mixture b, and carrying out heat preservation and reaction after dropwise adding is completed, so as to synthesize captan or folpet. The organic solvent, the catalyst and the water are introduced at the same time, the operation mode is optimized, excessive contact of the raw materials, the product and alkali is reduced, decomposition of the raw materials and the product is reduced, the product yield is increased, the wastewater amount is greatly reduced, the environmental protection requirement is greatly reduced, and the environmental friendliness is greatly improved.

The invention provides a method of obtaining data cubes such that elimination of the irrelevant portion of the illumination reveals the low intensity intrinsic spectral components. The method obtains target and reference data cubes using a single camera and of a single field of view so that low-level intrinsic spectral components may be detected and enhanced under conditions of high illumination intensity without the use of filters. Two exposures in rapid succession of the same field of view at the same camera settings are taken, one exposure of the target is taken under coherent conditions where the field of view is in focus, and the second exposure is of the same field of view taken under non-coherent conditions where the target is defocused such that it has no discernible spatial features in the field of view. Residual spectra previously determined is added to the defocus spectra in the defocus data cube of the target of interest resulting in an adjusted reference spectra, which in turn is subtracted from the corresponding focused spectra in the focused data cube of the target of interest resulting in a focused target data cube each of whose pixels is associated with its intrinsic spectrum.

The invention relates to the field of video monitoring, and discloses a shooting method and device of multiple moving objects, which are used for solving the problems of smear and low picture stability, and the method comprises the following steps: determining the central point offset of an average detection frame corresponding to each moving object based on the acquired central point of the corresponding detection frame of each moving object in a plurality of frames of images; determining movement information of each moving object based on the central point offset of each average detection frame; and based on a preset exposure rule, determining the maximum exposure time corresponding to each piece of moving information as the maximum exposure time corresponding to each moving object, andshooting each moving object according to the corresponding maximum exposure time. The corresponding maximum exposure time is determined according to the movement information of each moving object, andeach moving object is photographed according to the corresponding maximum exposure time, so that the exposure time does not need to be adjusted, the picture stability is improved, and the problem ofsmear existing in photographing of a plurality of moving objects is solved.

The invention relates to a medical data measurement system. The medical data measurement system comprises a sensing module and an intelligent module. The sensing module is used to monitor a change of a data. The intelligent module receives the data of the sensing module, and comprises an identification module and a processing module. The identification module is used to identify and determine to drive the processing module to obtain a physiological value from the data. The sensing module can be an automatic forehead temperature measurement. Through the above, automatically measuring, tracking, and locating a measurement of a medical data can be achieved.

Computer-based systems, software, and computer-implemented methods for creating an index of securities based upon various data transformations of risk factor metrics regarding entities or securities associated with the entities and weighting each index member in proportion to its combined transformed weighting value.

The embodiment of the invention discloses an image processing method, and the method comprises the steps: enabling data processing equipment to obtain an original image, carrying out the down-sampling of the original image, generating a deep bilateral grid after the deep network calculation, carrying out the correction of an original affine transformation matrix in the deep bilateral grid, obtaining a new affine transformation matrix, and carrying out the processing of the new affine transformation matrix. And the data processing equipment performs affine filtering according to the new affine transformation matrix to generate an enhanced image. And the enhanced image is obtained according to the corrected new affine transformation matrix, so that the phenomenon of negative optimization is effectively reduced.

The invention discloses a Bayesian optimization exposure control method based on entropy weight image gradient, and relates to the technical field of vehicle-mounted cameras. According to the Bayesian optimization exposure control method based on the entropy weight image gradient, the entropy weight gradient is added on the basis of the gradient information of the original image, so that on one hand, gradient noise in the original image can be minimized, and on the other hand, a saturated mask can be established; therefore, the information loss of the original image is reduced to the maximum extent by reducing the overexposure or underexposure area, and the detail features of the original image are reserved; meanwhile, in order to avoid overlong exposure stabilization time of the camera, a Bayesian optimization algorithm is added in the exposure control method, and the optimal shutter time is obtained. The Bayesian optimization exposure control method is suitable for many computer vision target detection fields, such as scenes of lane detection, vehicle detection, pedestrian detection and the like.

The embodiment of the invention relates to a fingerprint acquisition method and related products, and the method comprises the steps: obtaining a finger pressing area through a fingerprint sensing chip, obtaining environment light sensing data through an AP, and determining a preset pressing area threshold value according to the environment light sensing data, and determining whether to report a finger pressing event to the AP through the fingerprint sensing chip according to a preset pressing area threshold value and the finger pressing area, and controlling the fingerprint sensing chip to acquire a fingerprint image through the AP if it is determined that the finger pressing event is reported. According to the fingerprint acquisition method, the preset pressing area threshold value is dynamically adjusted according to the intensity of the ambient light, the subsequent fingerprint acquisition process is started only when the finger pressing area is large enough in the strong light environment, in conclusion, the finger pressing area can be dynamically adjusted according to the intensity of the ambient light, then the strong light incidence is reduced, the fingerprint image overexposure problem is reduced, and the fingerprint image quality is improved.

The invention discloses a preparation method of perfluorocyclohexylformyl fluoride. (a) by volume, 5-6 parts of electrolyte, 15-16 parts of anhydrous hydrofluoric acid and 2-3 parts of solubilizer are put into the Reaction kettle, under the conditions of temperature 10-25°C and pressure 0.05-0.15MPa, react for 1-5 hours to obtain the electrolytic configuration solution, which is ready for use; (b) continuously add the electrolytic configuration solution obtained in step (a) to the circulation tank , and then fed into the electrolytic cell through a circulating pump, and the electrolytic fluorination reaction is carried out at a temperature of 15-35 °C under normal pressure. The gas phase product obtained by electrolysis enters the product condenser through the pipeline, and the liquid phase condensed by the product condenser enters the product separator for stratification. The upper inorganic phase is hydrogen fluoride, which is sent to the circulation tank to participate in the electrolytic fluorination reaction again. The lower inorganic phase After filtration and rectification, the product of perfluorocyclohexylformyl fluoride is obtained. The invention has the advantages of simple process, long operation period, stable product quality, energy saving and environmental protection.

The invention provides an automatic exposure control system and method, and relates to the technical field of exposure control, comprising: an image acquisition module for continuously acquiring current environmental images; an image processing module, connected to the image acquisition module, for dividing the current environmental images into a The main body area and a background area, and the brightness difference between the main body area and the background area is calculated; the brightness calculation module is connected to the image processing module, and is used for calculating an exposure adjustment coefficient according to the brightness difference, and processing according to the exposure adjustment coefficient to obtain the target brightness value; the exposure control module is connected to the brightness calculation module, and is used to control the automatic exposure of the photographing device according to the target brightness value. The beneficial effect is that the target brightness value can be adaptively adjusted according to the scene, so that the subject area is more prominent, and the brightness of the photos taken is more reasonable, which effectively avoids the drawbacks of the conventional automatic exposure algorithm that the target brightness remains unchanged, and reduces the overexposure or underexposure of the picture. abnormal situation.