47results about How to "Reduce overexposure" patented technology

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.

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 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.

The invention provides a flash light device, which includes a light source, a light diffuser and a light diffuser's driving unit. The light diffuser's driving unit provides the light diffuser with a required driving voltage according to a voltage information, in which the voltage information is determined according to an original image without light-complementing of the light source and a pre-flash image with light-complementing of the light source.

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 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.