83 results about "Lighting ratio" patented technology

The invention discloses a method for establishing the algal phase of a shrimp culture pond, microalgae with the dominance of greater than 0.15 is selected from a culture water body, the microalgae is arranged in culture liquid with the nitrogen source concentration of 261 to 338mumol/L and the phosphorus source concentration of 25 to 32mumol/L, the enlarged culture and propagation are carried out under the culture conditions till the microalgae total biomass which is required by the shrimp culture, algae liquid is further introduced into the shrimp culture pond for the shrimp culture: the temperature is 24 to 27 DEG C; the salinity is 21 to 26; the pH is 7.5 to 8.5; the light intensity is 5500 to 7000Lx, and the lighting ratio is 12: 12 to 14: 10. The microalgae ecological environment of the shrimp culture pond is optimized by establishing the algal phase to cause the balanced culture of various types of microalgae, thereby being conductive to avoiding the single biological diversity of the shrimp pond caused by excessive culture of individual microalgae or group disappearance during the culture process and the situations of drastic change of water environment, deterioration of the quality of the environment of the culture water body, and the like.

In the present invention, only in screen display with a low lighting ratio in which low gradation display, which tends to cause writing insufficiency, is often performed, a writing current is multiplied by N to increase a characteristic fluctuation compensation ability of driving and transistors and reduce display unevenness. In addition, the number of frames to which an N-fold electric current is fed is reduced. Consequently, display with influences of an increase in electric power and a decline in a life controlled to a minimum limit is realized.

Provided is a drive device and a drive method of a light emitting display panel in which shadowing generated due to the lighting ratio of light emitting elements and a dimmer setting condition can be reduced to a level at which there is no problem for practical use. An analog video signal is supplied to a drive control circuit 11 and an A/D conversion circuit 12 and is converted into image data which corresponds to each pixel in the A/D conversion circuit 12 to be written in an image memory 13. The image data is read out of the image memory 13 for each scan, and the drive control circuit 11 obtains a rate of EL elements which are to be controlled to emit light (lighting ratio of light emitting elements for each scan). Based on the lighting ratio and dimmer setting data, precharge control data is read out of a look up table 14, and a precharge voltage VAM based on the precharge control data is supplied to a data driver 2. Thus, the precharge amount in the parasitic capacitances of the light emitting elements is changed, and as a result, the occurrence rate of shadowing can be restrained.

An endoscope apparatus includes: first and second cooling units configured to cool first and second light source portions; an image pickup portion configured to generate a picked-up image; and a cooling control portion configured to control amounts of light emission of the light source portions while maintaining an amount-of-light ratio so that the brightness of the picked-up image becomes the target brightness and control cooling based on the information about the amount-of-light ratio and the brightness control information; wherein the cooling control portion decides a cooling capacity of the first cooling units and a cooling capacity of the second cooling units for cooling the respective light source portions for which the amounts of light emission are controlled, at the cooling ratio, so as to cause the light source portions to be included within a predetermined temperature range, based on the brightness control information.

The invention discloses a control method, apparatus, and system of a rail vehicle lighting system and a rail vehicle. The method comprises the following steps: determining the total current of a cool color temperature LED and a warm color temperature LED according to target brightness, wherein the target brightness is determined according to the illuminance of an environment where the rail vehicle is located; determining the light ratio of the cool color temperature LED and the warm color temperature LED according to target color temperature, wherein the target color temperature is determined according to current time; and controlling the operation of the cool color temperature LED and the warm color LED according to the total current and the light ratio. The control method, apparatus, and system solve the technical problem that the light source of the rail vehicle has large energy consumption and low comfortableness in the prior art.

The invention provides an exposure control method and device and electronic equipment. The method comprises the steps that according to overexposure areas and non-overexposure areas in a preview image, a light ratio of the preview image is determined, according to the light ratio, a preset initial exposure quantity EV level combination is adjusted to obtain a target EV level combination, and according to the target EV level combination, exposure control is conducted. On the basis of the light ratio of the preview image, the preset exposure quantity level combination is adjusted, and the exposure quantity level combination is adjusted dynamically according to different night scene brightness, so that under modes of night scenes with different brightness, high imaging quantity can be obtained separately; the technical problems that in the prior art, a fixed EV level combination is adopted, and the imaging requirements with different night scene brightness cannot be met, so that the imaging quality is low are solved.

The invention discloses an image processing method. The method comprises the steps of positioning all human faces in a preview image; calculating an area ratio of the human face in the preview image so as to obtain a largest human face area in which the human face with the largest area ratio is; calculating a first average brightness value FL of the largest human face area, a second average brightness value PL of the preview image and a light ratio FP, wherein a light ratio FP is a ratio of the first average brightness value FL to the second average brightness value PL; and regulating the brightness values of areas in which all human faces are according to the first average brightness value FL and the light ratio FP. The invention further discloses an image processing device, a non-volatile computer readable storage medium and a computer device. Through adoption of the image processing method, the image processing device, the non-volatile computer readable storage medium and the computer device, if the light ratio FP is low and the human face average brightness is low, the brightness values of all human faces are increased, so that the human face brightness in photographing is highenough, and the photographing effect is improved.

The invention relates to a blended stretch yarn which is formed by blending milk fiber, spun silk, Le Car and cotton fiber blended fabric; wherein, the yarn comprises the following component by weight percentage: 19-30% of milk fiber, 25-43% of spun silk, 5-8% of Le Car, 20-50% of cotton fiber. The blowing process adopts the technological principle of light ratio, low speed and anti-licking, the speed of beater is reduced, the fiber damage is reduced, the moderate antistatic agent is sprayed on the cotton roll, and the cotton roll is wrapped. In the carding process, the speed ration of a cylinder and cubing rolls is improved, and the gauge of a cover board and the cylinder is enlarged. In the doubling process, a first rear draft multiple is grasped in the slightly larger way; the clockwise drafting three combination process is adopted. A spinning machine dismantles a cross traverse gear, so as to avoid spandex deviation, and the twist factor is grasped in the slightly larger way. In the cheese winding process, the cheese winding adopts the techniques of the low speed, light tension, small elongation and elastic security. The yarn has health care function on the nervous system, and significantly improves indicators of color fastness, brightness, strength, etc.

System and method for measuring flame temperature profile are disclosed. The temperature measurement system disclosed measures temperature profile of coal burner flames in a multi-burner furnace environment by capturing temperature images using optical devices. Any point or area of temperature captured in the image is determined by the ratio of the magnitude of the near infrared (NIR) light and the visible red light of that particular point or area, from which the temperature distribution of burner flame is developed. The two light ratio method can minimize the impact on the flame temperature measurement caused by the flame soot in a furnace and thus can greatly improve the temperature measurement accuracy.

The present invention is one infrared proportional pulsation detecting device and method for flock state in water and belongs to the field of optical detection technology for flock state in water treatment. The infrared proportional pulsation detecting device includes transmitted light detector inside the No. 2 window, infrared source inside the No. 1 window opposite to the transmitted light detector, and scattered light detector inside the No. 3 window perpendicular to the infrared source. The electric signals the transmitted light detector and the scattered light detector output are converted into digital signal in the A/D converter, and the digital signal is processed in the microprocessor to obtain the flock state number signal output via the communication interface. The present invention has less investment and high effect, and is especially suitable for use in controlling the throwing of flocculant in water treatment.

A measurement apparatus includes: a first illumination unit configured to illuminate the surface with first light having a first wavelength having a light intensity distribution in a pattern shape; a second illumination unit configured to illuminate, with second light having a second wavelength, a region wider than an illumination region illuminated with the first light; an image sensing unit configured to sense an image of the surface; and a processor. The processor is configured to obtain a first image of the first wavelength and a second image of the second wavelength of the surface unit while illuminating the surface by using the first and second illumination units, correct the first image based on the second image, and obtain information of a shape of the surface by using the corrected first image.

The invention discloses a method and device for adjusting local region exposure, and a mobile terminal, wherein the method for adjusting local region exposure comprises the following steps of: in a photographing preview interface, determining a first region in the photographing preview interface, and obtaining first exposure data corresponding to the first region; receiving photographing operation of a user, and obtaining second exposure data for exposure in a second region; and inserting the first region having the first exposure data into the whole region having second exposure data, and generating a result image. By means of the method and device for adjusting local region exposure, and the mobile terminal in the embodiment of the invention, the problem that exposure in the local region is insufficient under the condition of a high light ratio can be solved; the better photographing effect can be obtained; and the user satisfaction is improved.

The invention discloses an image processing method. The method comprises the steps of carrying out photometry on a first coordinate in a selected framing window through a module A of double cameras and carrying out background calculation to obtain an exposure value of an image, thereby obtaining a preview image 1; carrying out photometry on a second coordinate in the selected framing window through the module B of the double cameras and carrying out background calculation to obtain the exposure value of the image, thereby obtaining the preview image 2; generating an image 1 according to the preview image 1 and generating an image 2 according to the preview image 2; and synthesizing the images according to the image 1 and the image 2. The invention also discloses an image processing mobile terminal. The problem that in related technologies, the image with balanced exposure is difficult to synthesize is solved; through relatively precise image data collection, the capability of obtaining the image with the balanced exposure by the mobile terminal is improved particularly in a high light ratio condition, so the image with a relatively high dynamic range is obtained; the photographing practicability and interestingness are improved; and the user experience is improved.

In a plasma-display-panel driving method, a field period is divided into a plurality of sub fields, each of which has an address period for allowing discharge cells to selectively generate an address discharge and a sustain period for allowing the discharge cells having generated the address discharge to generate a sustain discharge by a number of times corresponding to a brightness weight. In the sustain period, a period for setting display electrode pairs to the base potential is disposed between the sustain pulse for causing the final sustain discharge in the sustain period and the previous sustain pulse. In a time interval corresponding to the lighting ratio of the discharge cells in the sub field after applying to the display electrode pairs a voltage for generating the final sustain discharge, a voltage for reducing the potential difference between electrodes of the display electrode pairs is applied to the display electrode pairs. Accordingly, it is possible to generate a stable address discharge and thus to reduce a crosstalk without increasing the voltage for generating the address discharge.

This invention involves a method for obtaining the scattering / direct ratio of natural light on the ground via the remote sensing digital images and digital topographic maps. The steps are: Firstly, it inputs the remote sensing digital images and the corresponding digital topographic maps to search the shadow and calculate the parameters. Then, it calculates the natural light scattering / direct ratio of the shadow on the ground. Then, it calculates the natural light scattering / direct ratio of all the shadow on the ground. Then, it interpolating-calculates the natural light scattering / direct ratio of the points without shadow on the ground. Finally, it outputs the natural light scattering / direct ratio corresponding to the ground.

A light-amount control device includes a plurality of lighting units each of which emits light for illuminating a photographing area of a photographing optical system. Further, the light-amount control device includes a peripheral light amount data calculator and a lighting unit controller. The peripheral light amount data calculator calculates a peripheral light amount data defining ratios of light emission intensities for the lighting units, to make the illuminance of an image plane of a standard object that has a flat surface being perpendicular to the optical axis of the photographing optical system and having a constant reflecting light ratio, constant when the standard object is illuminated by the lighting units. The image plane is formed by reflected light from the surface of the standard object that enters the photographing optical system. The lighting unit controller controls the lighting units so that the intensity of light at a wider illuminating angle to an optical axis of the photographing optical system becomes higher, based on the peripheral light amount data.

The invention discloses a mobile terminal photographing device and method. The device comprises a first photographing module, a light ratio obtaining module, a light ratio comparison module, a light intensity adjustment module and a light supplement module; the first photographing module is used to control a mobile terminal to photograph a current scene and obtain an original picture when a photographing instruction is detected; the light ratio obtaining module is used to determine a dark portion and a bright portion in the original picture, and to obtain an actual light radio of the original picture; the light ratio comparison module is used to compare the actual light ratio with a pre-stored expected light ratio and obtain a difference value between the actual light ratio and the expected light ratio; the light intensity adjustment module is used to adjust flash intensity of a flash lamp of the mobile terminal according to the difference value, and is used to control the mobile terminal to photograph the current scene again by using the adjusted flash intensity and obtain a light supplement picture; and the light supplement module is used to supply light for the dark portion or the bright portion of the original picture according to the light supplement picture so as to adjust the actual light ratio of the original picture to be the expected light ratio. When an auxiliary light source and a light reflecting plate do not exist, an adjustment for the light ratio of the photographed picture of the mobile terminal is achieved, and the effect of the photographed picture is good.

The embodiment of the invention discloses an automatic focusing method, device and equipment and a storage medium. The method comprises the following steps: determining an infrared light proportion ina current monitoring environment, and according to the infrared light ratio, determining a zoom following curve of the lens under the current object distance; determining at least two zoom positionsof the lens in the zoom operation process of the lens, carrying out following focusing at focusing positions associated with the zoom positions according to a zoom following curve of the lens under the current object distance, and carrying out automatic focusing according to the obtained focusing positions after zoom operation. According to the technical scheme of the embodiment of the invention,when zooming is carried out from the wide-angle end to the telephoto end, it can be guaranteed that the optical image projected to the surface of the image sensor through the lens can keep a good image effect all the time, and therefore the focusing position corresponding to the optimal clear point of the image can be rapidly found after the zooming operation process is finished, and the automaticfocusing efficiency is improved.

The invention relates to a detecting device for LED light source automotive lamps, in particular to a light distribution detecting device for an automotive LED headlamp. The detecting device comprises a darkroom and a headlamp light distribution system arranged in the darkroom. A UV-VIS spectrometer which can receive output signals of the headlamp light distribution system is further arranged in the darkroom. The UV-VIS spectrometer can convert light signals to electric signals and transmit the converted electric signals into a computer. The computer can further control the headlamp light distribution system. By the adoption of the structure, the headlamp light distribution system is combined with the UV-VIS spectrometer, measurement of red light ratio and UV light ratio is completed through computer processing calculations, and therefore the LED headlamp can be detected through an existing automotive headlamp light distribution testing system; accordingly, the application range of the system is further expanded, the usage effect is good, and the requirement of technological development is met; meanwhile, the structure is simple, measurement is convenient, and therefore the detecting device has excellent application and popularization prospects.