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3061 results about "Ambilight" patented technology

In home cinema and video editing technology, bias lighting is a weak light source on the backside of a screen or monitor that illuminates the wall or surface behind and just around the display. The purpose of bias lighting is to reduce the perceived brightness of the display as a result of the contrast with the slightly illuminated area around it. This reduces the eye strain and fatigue that occurs when viewing a bright display against a very dark background for an extended time, and increases the perceived blackness and contrast of the display.

Active safety type assistant driving method based on stereoscopic vision

InactiveCN102685516AAvoid tailgatingPreventing accidents such as frontal collisionsImage enhancementImage analysisActive safetyDriver/operator
The invention discloses an active safety type assistant driving method based on stereoscopic vision. An active safety type assistant driving system comprehensively utilizes an OME information technology, consists of a stereoscopic vision subsystem, an image immediate processing subsystem and a safety assistant driving subsystem and comprises two sets of high resolution CCD (charge-coupled device) cameras, an ambient light sensor, a two-channel video collecting card, a synchronous controller, a data transmission circuit, a power supply circuit, an image immediate processing algorithms library, a voice reminding module, a screen display module and an active safety type driving control module. According to the active safety type assistant driving method, separation lines and parameters such as relative distance, relative speed, the relative acceleration and the like of dangerous objects such as front vehicles, front bicycles, front pedestrians and the like can be accurately identified in real time in sunny days, cloudy days, at nigh and under the severe weather conditions such as rain with snow, dense fog and the like, so that the system can prompt a driver to adopt countermeasure through voice and can realize automatic deceleration and emergency brake at emergency situation, thereby ensuring safe travel in a whole day.
Owner:李慧盈 +2

Electronic image sensor

An electronic imaging sensor. The sensor includes an array of photo-sensing pixel elements for producing image frames. Each pixel element defines a photo-sensing region and includes a charge collecting element for collecting electrical charges produced in the photo-sensing region, and a charge storage element for the storage of the collected charges. The sensor also includes charge sensing elements for sensing the collected charges, and charge-to-signal conversion elements. The sensor also includes timing elements for controlling the pixel circuits to produce image frames at a predetermined normal frame rate based on a master clock signal (such as 12 MHz or 10 MHz). This predetermined normal frame rate which may be a video rate (such as about 30 frames per second or 25 frames per second) establishes a normal maximum per frame exposure time. The sensor includes circuits (based on prior art techniques) for adjusting the per frame exposure time (normally based on ambient light levels) and novel frame rate adjusting features for reducing the frame rate below the predetermined normal frame rate, without changing the master clock signal, to permit per frame exposure times above the normal maximum exposure time. This permits good exposures even in very low light levels. (There is an obvious compromise of lowering of the frame rate in conditions of very low light levels, but in most cases this is preferable to inadequate exposure.) These adjustments can be automatic or manual.
Owner:E PHOCOS

Three-dimensional measuring system, photographing device, photographing method, depth calculation method and depth calculation device

The invention provides a three-dimensional measuring system, a photographing device, a photographing method, a depth calculation method and a depth calculation device. The photographing device comprises a projection device, a first imaging unit and a second imaging unit, wherein the projection device is used for projecting discrete beams to a photographing area, the discrete beams are modulated to form a plurality of discrete spots in the photographing area, and the discrete spots can be recognized by other discrete spots in a peripheral preset space range; the first imaging unit is used for photographing the photographing area to acquire a first two-dimensional image; the second imaging unit and the first imaging unit have a predetermined relative position relation, and the second imaging unit is used for photographing the photographing area to acquire a second two-dimensional image. Therefore, under the situation of not being subjected to the influence of the ambient light and the background, the spatial depth information of a detected object can be accurately acquired. For example, when the detected object is arranged in an environment with a single background or in an environment with similar background textures, the spatial depth information of the detected object still can be accurately obtained.
Owner:SHANGHAI TUYANG INFORMATION TECH CO LTD

Color adjusting arrangement

Disclosed is a color adjusting arrangement comprising: i) a first wavelength converting material arranged to receive ambient light and capable of converting ambient light of a first wavelength range into light of a second wavelength range, and/or reflecting ambient light of said second wavelength range, said second wavelength range being part of the visible light spectrum; and ii) a complementary wavelength converting material arranged to receive ambient light and capable of converting part of said ambient light into light of a complementary wavelength range, which is complementary to said second wavelength range, and arranged to allow mixing of light of said second wavelength range and said complementary wavelength range; such that light of said second wavelength range that is emitted and/or reflected by said first wavelength converting material and light of said complementary wavelength range is mixed when leaving the color adjusting arrangement towards a viewing position, the light leaving the color adjusting arrangement thereby appearing less colored, i.e. having a color point substantially near the black body line. The invention thus allows an undesirable colored appearance of a semiconductor-phosphor based light source to be at least partly extinguished or neutralized.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV

Anti-fake iris identity authentication method used for intelligent glasses

ActiveCN103544420ALow peripheral requirementsEnsure detection accuracyAcquiring/recognising eyesDigital data authenticationPupil diameterSmartglasses
The invention provides an anti-fake iris identity authentication method used for intelligent glasses. According to the method, requirements for periphery devices are low, multiple faking methods can be detected, and the high-adaptability anti-fake purpose is achieved. The method comprises the steps of (1) extracting standard images and saving user iris characteristics in the standard images as standard iris characteristics; (2) generating a random incident light intensity change sequence based on ambient light to stimulate the eyes of a user, collecting a dynamic user eye image, obtaining an eye image sequence, and extracting and saving user iris characteristics in the dynamic eye image as iris characteristics to be detected; (3) obtaining a pupil diameter change sequence through the dynamic user eye image and calculating the matching rate Pass1 between the pupil diameter change sequence and the incident light intensity change sequence; (4) selecting an image to be authenticated from the dynamic user eye image, selecting a comparison standard image from the standard images, and calculating the matching rate Pass2 of the iris characteristics of the image to be authenticated and the iris characteristics of the comparison standard image; (5) obtaining an authentication result according to the Pass1 and the Pass2.
Owner:WUXI YUNQUE TECH CO LTD
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