40 results about "Light Adaptations" patented technology

The invention provides a method for confirming actinic light intensity in chlorophyll fluorescence induction curve measurement, which comprises the following steps of: obtaining plant leaf blades, shading environment light, setting multiple light intensity gradients, irradiating for a preset time with each light intensity gradient and measuring practical photosynthetic efficiency and relative electron transmission rate; drawing a response curve of the relative electron transmission rate, which is changed along the light intensity and fitting the response curve to obtain semi-saturated light intensity; taking the semi-saturated light intensity as the actinic light intensity for measuring the chlorophyll fluorescence induction curve; calculating a difference value between a maximal fluorescence value after light adaptation and a practical fluorescence value and a difference value between a maximal fluorescence value after dark adaptation and a basic fluorescence value after dark adaptation, and calculating the ratio of the two difference values; judging if the ratio is in a preset range, if so, confirming the current light intensity as the actinic light intensity, and if the ratio is less/more than the lower limit/the upper limit of the preset range, reducing/increasing the light intensity, re-measuring the chlorophyll fluorescence induction curve and calculating the ratio. The method can measure typical chlorophyll fluorescence induction curve.

There is provided a method of boosting a local dimming signal. In the method, it is determined whether or not local dimming signals, which are applied for individually driving light source blocks per frame, satisfy boosting conditions. Then, a predetermined local dimming signal corresponding to at least one of the light source blocks is boosted to a reference luminance value when the local dimming signals continuously satisfy the boosting conditions, and the boosting luminance of the predetermined local dimming signal at the reference luminance value is gradually decreased after a light adaptation time of an observer's eye. When the luminance of light source blocks that are boosted is gradually decreased before the light adaptation time or luminance of light source blocks that will be boosted is gradually increased to the light adaptation time, power consumption required to boost the light source blocks may be decreased.

The invention relates to a face recognition method and device. The method comprises the following steps: acquiring a first image and a second image which comprise the face of an object to be tested, wherein imaging methods of the first image and the second image are different; extracting first feature information from the first image; extracting second feature information from the second image; carrying out data fusion on the first feature information and the second feature information; carrying out optical flow processing on the feature information after data fusion; and judging whether the object to be tested is a living body or not according to the feature information processed by optical flow. Features of images acquired by the different imaging methods are subjected to data fusion, and then are processed by the optical flow, whether the object to be tested is a living body or not can be determined, therefore, replaying cheating caused by using photos or videos is prevented, and the invasion resistance of face recognition is improved. In addition, features are weighted by various feature parts of the face, and the recognition speed, invasion resistance and light adaptation of infrared human face recognition can be improved further.

The present invention relates to the driving of optical displays, such as Dynamic Foil Displays, and provides dynamic adaptation of the number of subfields into which frame times of such displays are divided. The number (1202) of subfields can thus be selected depending on for example the ambient light conditions (1201) and image quality requirement. In particular, a smaller number of subfields facilitates brighter images, whereas a larger number of subfields facilitates an increased number of gray scales and/or motion artifact reduction.

The invention discloses a method of achieving fast driving of an area array charge coupled device (CCD) by means of inductive charge accumulation. The method comprises the steps that model parameter setting is carried out according to imaging requirements; an area array CCD driving schedule is generated; the area array CCD enters into an integration phase and inductive charges are generated; the integration phase ends and the inductive charges are transferred to a storage area; the area array CCD enters into the next integration phase; the inductive charges are transferred to a horizontal shifting register; the inductive charge accumulation is carried out by repeating the previous operation according to a given parameter; the horizontal shifting register outputs a line of inductive charges; the previous operation is repeated according to the given parameter until inductive charges of one frame of images are all output; and output of the next frame of images is carried out by repeating the fourth step to the ninth step. According to the method of achieving the fast driving of the area array CCD by means of the inductive charge accumulation, fast output of inductive charges of the area array CCD is achieved by means of the model parameter setting under the circumstance that external imaging environment changes, and the light adaptation range of the area array CCD can be widened greatly.

The invention relates to a control system. In particular, the invention has an object to provide a lighting device control system for controlling a lighting device upon receiving a turn-on signal to turn on the lighting device, to emit light capable of generating an illuminance equal to or lower than an ambient illuminance around a place where the lighting device is installed.

The invention discloses a flexible starting method of an LED lamp. The method comprises the LED lamp and a dimmer of the LED lamp. When the LED lamp is started, the dimmer controls the brightness of the LED lamp to change according to a time relationship function. According to the flexible starting method of the LED lamp, the starting time of the LED lamp is prolonged and the light intensity of the LED lamp is increased in a staged mode, so that people in the lighting environment can be provided with enough time for adjusting the light intensity changing, light adaptation can be avoided and people's eyesight can be protected.

The invention discloses a human eye light adaptation simulating intelligent lamplight device and air testing equipment. The intelligent lamplight device comprises a CPU (Central Processing Unit) module, an ambient light detecting module, a light emitter starting module and a light emitter module, so that the intelligent lamplight device can acquire ambient lights in real time and can adjust a duty ratio of a PWM (Pulse-Width Modulation) signal of the CPU module for lighting up a light emitter in real time based on the lights when the light emitter is turned on, and human eyes can be prevented against highlight stimulation during a period of time and can adapt to the environment in a certain time. The air testing equipment provided with the intelligent lamplight device comprises an air testing module which is electrically connected with the CPU module, so that the air testing equipment which is provided with a light part based on a light and dark adaptation process of human eye perception characteristics can dynamically test and display multiple indoor air quality information. The human eye light adaptation simulating intelligent lamplight device is applicable for devices which are used at home, offices and other indoor places, can perform lamplight brightness adjustment based on the human eye light adaptation and have an air information function.

The invention provides a plant chlorophyll fluorescence parameter correction method and device. The method comprises A1, carrying out dark adaptation treatment on a plant; A2, acquiring a minimum chlorophyll fluorescence image of the plant, and then acquiring a maximum chlorophyll fluorescence image of the plant; A3, enabling the plant to be in an actinic light irradiation environment, and obtaining an initial reflection image of the plant at the moment; A4, irradiating the plant with actinic light for t hours, and obtaining a plant reflection image and a dynamic instantaneous fluorescence image after the plant reaches a light adaptation state; A5, after the plants are illuminated by ultraviolet light for t hours, obtaining a steady-state blue spectral fluorescence image, a green spectralfluorescence image, a red spectral fluorescence image and a far infrared spectral fluorescence image of the plant; A6, calculating a chlorophyll fluorescence yield deviation coefficient; A7, carryingout correction calculation to obtain an actual chlorophyll fluorescence yield parameter under an illumination condition; A8, calculating to obtain an actual chlorophyll fluorescence parameter image for analysis. The photosynthesis efficiency can be detected more accurately by the method and the device.

The invention relates to an electronic police checkpoint system capable of enhancing human eye light adaptive capacity at night. The system can effectively solve the problem that an existing checkpoint system flashing light severely affects the vision of drivers or pedestrians. According to the technical scheme, the system comprises a video detecting and photo capturing device, a light adaptation additional light supplementing device with the lighting brightness increasing gradually in the vehicle coming direction is arranged on the front side of the video detecting and photo capturing device, and a dark adaptation additional light supplementing device with the lighting brightness decreasing gradually in the vehicle going direction is arranged on the rear side of the video detecting and photo capturing device. The electronic police checkpoint system is novel and unique in structure, simple, reasonable, safe, reliable, capable of effectively solving the problem that the checkpoint system flashing light affects the vision of the drivers or the pedestrians, low in cost, convenient to install and good in use effect and has good social and economic benefits.

The invention discloses an improved highway tunnel illumination assistant device. According to difference values between the illumination intensity of environments outside an exit and an entrance of atunnel and the illumination intensity in the tunnel, and the changes of the difference values, highway tunnel lamp sets with gradually changed certain distance illumination brightness are arranged inthe exit and the entrance of the tunnel, so that when a driver passes through the tunnel, the eyes can be gradually adaptive to obvious brightness changes inside and outside the tunnel, the time fordark adaptation and light adaptation is shortened, the sight distance of the driver is improved, the irritation of the sudden change of the illumination brightness to the driver is reduced, and the traffic safety of the highway tunnel is guaranteed.

The invention relates to a retinopathy light adaptation treatment rehabilitation instrument. The instrument comprises a carrying base, a carrying upright column, a working platform, a treatment mechanism and a control circuit, the carrying base is of a sealing cavity structure, the control circuit is embedded in the carrying base and connected with the carrying upright column, the working platformand the treatment mechanism, the carrying column is connected with the upper end face of the carrying base and the lower end face of the working platform through a rotary platform mechanism, the carrying base, the carrying upright column and the working platform are coaxially distributed, the upper end face of the working platform is connected with the treatment mechanism, and the treatment mechanism comprises a horizontal guiding rail, a sliding block, a horizontal driving mechanism, a lens tube, an auxiliary light source, a display, an adjusting lens group and an observation optical lens. The instrument has the advantages of being simple in structure, flexible and convenient to use, good in universality and high in operation automation degree, the instrument has a better modular structure, on one hand, using demands of different patients can be effectively met, on the other hand, a treatment scheme can be flexibly adjusted according to the actual demands of a patient, and thereforedemands of different disease treatments and rehabilitation operations are met.

The invention proposes a human face structuring method and a human face structuring system wherein the human face structuring method comprises: obtaining a low-resolution human face image; according to the light distribution and detail distribution of the low-resolution human face image, adjusting the light distribution and detail distribution of each training set image in the training set; based on the each adjusted training set image, creating high-resolution image blocks through a neighborhood embedding method; and combining the high-resolution image blocks to obtain a high-resolution human face image. According to the technical schemes of the invention, a light-adaptation human face structuring method can be realized, which enables a low-resolution human face image to have the consistent light as each training set image so that their high frequency information is consistent and that high resolution reconstruction can be easily carried out, therefore, making the reconstruction of a high-resolution human face image more accurate.

The invention discloses a high-variable precision photographing method based on a mobile carrier. The method comprises the steps of realizing an initially positioning of a camera in a preset way; utilizing a porous model as a camera optical model, adjusting a to-be-photographed device to the central position of an image, and carrying out the precision photographing by virtue of the variable and zooming adjusting way, so that the precision image collection can be realized by virtue of the technology such as the automatic light adaptation technology.

The invention belongs to the technical field of cotton genetic engineering application, and particularly relates to a patent application for new application of a cotton GhPHOT1-1 gene in efficient utilization of plant light energy. The GhPHOT1-1 gene is associated with plant growth and development; after overexpression of the GhPHOT1-1 gene, the maximum light energy conversion efficiency Fv/Fm ofPSII reaction center of transgenic plant leaf blades is significantly increased, and the maximum photochemical efficiency Fv'/Fm' of PSII under light adaptation conditions is improved, that is: the overexpression of the GhPHOT1-1 can improve the efficiency of light energy utilization of transgenic plants. The cotton GhPHOT1-1 gene has a direct correlation with the photosynthetic efficiency enhancement based on a conserved blue receptor response function. Based on the discovery, the cotton's ability to capture light is better enhanced, so that the cotton can maximize the use of light energy, then a molecular breeding method is used for increasing the yield, showing a good application prospect.

The invention discloses a self-adaptive panoramic light adaptation method. The method comprises the following steps: automatically detecting the brightness of the surrounding environment through an ambient light sensor, automatically adapting to the brightness of the panoramic light, and enabling the brightness color of a picture to extend to the brightness of the panoramic light to be softly matched with the brightness of the surrounding environment; according to a configuration file, performing region partitioning and sub-small block partitioning required by panoramic light configuration, and forming single-side, double-side, three-side and four-side region panoramic light through self-adaptive configuration; by analyzing the collected image data of all the sub-small blocks of the screen partition, establishing a panoramic light image output data model by adopting a deep fusion image algorithm, an application image averaging algorithm and an image compensation algorithm, and achieving the consistency of a screen display image and image extension. The data acquisition sequence of the image sub-cell blocks is in one-to-one correspondence with the output sequence of the panoramic light display output control module, panoramic light is controlled to be output and displayed by using a first-in first-out method, and the image extension display time delay is reduced. According to the invention, the image color display output time delay is reduced.

The invention discloses a self-regulating type photobioreactor. The self-regulating type photobioreactor structurally comprises a base, a light adaptation device and a reaction chamber, wherein the upper side of the base and the lower side of the light adaptation device are in built-in connection, and the middle part of the upper end of the light adaptation device is bonded to the lower side of the reaction chamber. A spring is compressed by a magnetic-attracted iron slab, moves upwards under the fixing of a guide post and will drive a light shield for regulation while moving, a folded sheet is spread due to drawing of an offset plate so as to shield part of light, an internal temperature of the reaction chamber is prevented from increasing in case of intense light, the growth efficiency of organisms is increased, the magnetic mutual attraction is improved after an electromagnet is regulated, a link drives an ejector pin to move upwards, the ejector pin extrudes a top plate at the bottom of a shield after moving upwards, the top plate drives a baffle to offset after the top plate is extruded so as to shield a photosensitive shell, the irradiation of ambient light to the photosensitive shell is reduced, and photosensitive control is prevented from reaction on the ambient light.

The invention discloses a tunnel lamp mounting system and mounting method, and belongs to the field of tunnel lamps. The mounting system comprises an exit tunnel lamp unit, a tunnel lamp unit and an entrance tunnel lamp unit, tunnel lamps on the exit tunnel lamp unit are obliquely mounted from a tunnel exit to the inside of a tunnel, tunnel lamps on the tunnel lamp unit are vertically mounted, tunnel lamps on the entrance tunnel lamp unit is obliquely mounted towards a tunnel entrance, and mounting rods are arranged among the tunnel lamps and the top of the tunnel. The tunnel lamps on the exittunnel lamp unit and the tunnel lamps on the entrance tunnel lamp unit are obliquely mounted, so that light adaptation of a driver is more facilitated when the driver drives a car to enter the tunneland leave from the tunnel, and traffic accidents are decreased in entering and exiting.