1415 results about "Bright spot" patented technology

The invention discloses a view line tracking method and an assistant system for the handicapped by using the method. The method comprises the steps of image pretreatment, the orientation of a human eye area by utilizing Harr features, blinking recognition, the inspection and judgment of LED reflecting lightspot in pupils, the accurate position of pupil centre, the calculation of view line direction and so on. The system comprises an embedded-like platform, a camera, a display screen and four LED and wheelchair running control modules which are installed at the four corners of the display screen and arranged into a rectangular. The system is an embedded-type system, which carries out blinking inspection, the inspection of the reflecting lightspots against infrared light sources on corneas, the accurate position of the pupil centers and the judgment of view line directions by the camera and a processor, tracks the view line of human eyes and, meanwhile, carries out the recognition of the status of the human eyes by judging the view line directions of the human eyes when gazing on the screen, thus realizing the functions of wheelchair control, music play control, text reading and webpage rolling. The invention is convenient for use and has high accuracy, thereby being capable of bringing great convenience for the lives of the handicapped.

The invention belongs to the field of intelligent automobile road detection and relates to a method for detecting road information and identifying forward vehicles based on vision. The method comprises image preprocessing, lane line characteristic parameter extraction, region-of-interest segmentation and vehicle outline identification. According to the method for detecting the road information and identifying the forward vehicles based on vision, the complexity of computation is simplified by extracting the regions of interest, filtering out background regions and reducing the processing scope; the processing result of each frame of image is obtained through fixed computation times by use of a line-by-line retrieval method, and differing from the characteristic, namely linear fitting on each bright spot, of Hough conversion, the method has outstanding advantages in algorithm instantaneity; the instantaneity of the Robinson direction model operator is improved, and an intermediate variable is set to reduce the computation times of each pixel point. The regions of interest are screened and judged by use of an information entropy and a vehicle tail symmetry characteristic in the target region, and therefore, the omission factor and the false drop rate of the algorithm are reduced.

An LED-based light for replacing a conventional fluorescent tube in a fixture is provided. The LED-based light includes an elongate light transmitting rod defining a bore and at least one LED positioned at one or both ends of the rod and oriented to produce light longitudinally into a portion of the rod radially outward of the bore. At least one connector is physically coupled to an end of the rod and electrically coupled to the at least one LED. The at least one connector is adapted for physical and electrical connection to the fixture. In operation, the directional light produced by the at least one LED is dispersed by way of reflection, refraction, and/or diffusion while traveling longitudinally through the rod to reduce the appearance of bright spots.

A multi-structural query system performs a high-level multi-dimensional query on a multi-structural database. The query system enables a user to navigate a search by adding restrictions incrementally. The query system uses a schema to discover structure in a multi-structural database. The query system leaves a choice of nodes to return in response to a query as a constrained set of choices available to the algorithm. The query system further casts the selection of a set of nodes as an optimization. The query system uses pairwise-disjoint collections to capture a concise set of highlights of a data set within the allowed schema. The query system further comprises efficient algorithms that yield approximately optimal solutions for several classes of objective functions.

The invention relates to a liquid crystal mixture for a display, which comprises the following compounds in percentage by weight: 70 to 90 percent of compound in a general formula I, 0 to 20 percent of compound in a general formula II, 5 to 25 percent of compound in a general formula III, 0 to 10 percent of compound in a general formula IV and 1 to 15 percent of compound in a formula V. Through optimal combination and optical proportioning, the anisotropyenergy of the negative dielectric of the liquid crystal mixture reaches -9.5, a clearing point is between 95 and 110DEG C, the driving voltage is very low, the energy consumption can be effectively reduced, and a liquid crystal display (hereinafter referred to as LCD) powered by a battery is powered more durably. The mixture has good intersolubility between monomers, and the solubility of the mixture for dichroic dyes is good; and various single dichroic dyes with different colors can be added to the liquid crystal mixture, so the liquid crystal mixture has good absorbance and dichroic ratio to well realize darker dark state and greatly improve display contrast in the displaying process.

The invention discloses remote video monitoring system and method suitable for 3G mobile network communication, relating to the field of remote control and monitoring. The invention realizes the purpose of remotely controlling or viewing a target scene in real time by connecting a mobile phone or a personal computer to one or more intelligent network cameras, wherein the mobile phone can be any 3Gsmart mobile phone which supports WCDMA, TD-SCDMA or CDMA2000, which guarantees the universality of remote monitoring. The intelligent monitoring system of the invention has the characteristics of convenient use, easy deploy, easy popularization, and the like and brings a new bright spot to security causes.

The invention discloses a liquid crystal display panel, comprising a first substrate, a second substrate and a liquid crystal layer, wherein, the liquid crystal layer is arranged between the first substrate and the second substrate; the first substrate comprises a bottom material, an alignment film and a plurality of retaining walls; the bottom material is defined with a display area and a surrounding non-display area, the alignment film is arranged in the display area; the plurality of retaining walls are arranged in the surrounding non-display area; moreover, the heights of the plurality of retaining walls are greater than the height of the alignment film; a pollution source is blocked outside of the display area by the retaining walls after the friction alignment action of the alignment film, thereby preventing the pollution source from falling into the display area and avoiding the display detects such as group gray spots or light spots of the liquid crystal display panel. Therefore, the display quality and the practicability of the liquid crystal display panel are greatly improved.

Various methods, systems and structures relating to hair treatment are disclosed. They include a kit made up of a hair dye and a hair highlight. The kit may contain instructions to apply the highlight while the hair remains moist. A bristled applicator may be included in the kit for use in applying highlight to the hair. Corresponding methods of use and marketing are also disclosed.

A light source module having a plurality of light source blocks corresponding to a plurality of display regions, a method for driving the light source module, and a display device having the light source module. The output brightness of each of the light source blocks is individually dimmed according to a dimming control signal. A dimming control unit determines the average gray level and inherent brightness of each of the respective display regions, calculates a threshold gray level of each display region by using its inherent brightness, outputs a fixed brightness as a dimming control signal when the average gray level of the display region is greater than the threshold gray level, and outputs a variable brightness based upon the inherent brightness value, as the dimming control signal when the average gray level of the display region is less than the threshold gray level. Accordingly, brightness spots can be reduced by performing the brightness dimming with consideration of the interference brightness caused by the adjacent light source blocks.

To improve the consumer experience with electronic devices, a system and method is provided for customizing media content, and particularly video content, by creating highlight portions of the video content. In exemplary embodiments, the video files are “marked” or “flagged” about the portions of the video content to segment the highlight portions within the media file. The marks or flags may be inputted and incorporated as part of the metadata associated with the video file. A user's electronic device may then extract the marks or flags from the metadata, which causes a media player on the portable electronic device to play only the marked highlight portions. In addition, a user may share the highlights with others by transmitting the marked video files to others' electronic devices. Alternatively, the highlight creator may transmit only the metadata to another's electronic device, and the metadata marks may be extracted and applied to a video file stored on the other's device or streamed thereto.

A system and method for intelligently controlling headlights receive a multiplicity of images that represent frames of a video sequence of an external environment of a vehicle. At least one bright spot, or blob, is found that stands out from a dark background of the external environment within each frame of the multiplicity of images. A multiplicity of features is extracted from a found blob. A type is recognized of a found blob that is selected from a multiplicity of types of blobs. A determination is then made whether to turn on a high beam light or a low beam light based at least on the recognized type of the found blob and a set of rules. Finally, an action based on such decision is performed.

The invention discloses a sight line tracking system and method. The sight line tracking system includes the following components of: a plurality of cameras; a plurality of groups of light sources corresponding to the plurality of cameras; a light source control device which controls the plurality of groups of light sources to emit light sequentially so that the plurality of cameras can photograph bright pupil images and dark pupil images of users; a sight line feature detection unit which detects the positions of pupil center points and the positions of reflection bright spots from the bright pupil images and the dark pupil images photographed by the cameras; and a sight line estimation unit which calculates the three-dimensional space positions of cornea hook face center points and the pupil center points through using detected positions of the pupil center points and positions of the reflection bright spots so as to track the direction of the sight lines of two eyes so that a concerned position of the two eyes can be determined.

A touch control screen comprises a display, at least two touch control units and a control unit. The display has a display surface. The touch control units are configured beside the display surface. Each touch control unit comprises a light source and an image sensor. The light source is configured beside the display surface and suitable to emit a beam by facing a sensing space before the display surface. The image sensor is configured beside the display surface and the sensing surface of the image sensor faces the sensing space. The image sensor is suitable to capture a light spot in the sensing space and generate an image signal. The control unit is electrically connected with the light sources and the image sensors and suitable to receive the image signals from the image sensors, as well as judges the position of the light spot relative to the display surface according to the image signals. A touch control module and a control method are also disclosed.

The invention discloses an image detection and processing method and device and a terminal. The image detection method comprises the steps that any one or any combination of stain/bright spot detection, exposure detection, definition detection, light leakage detection and local shadow detection is performed on multiple images after multiple images are acquired. The above mentioned detection can beperformed on the eye fundus image in turn, partial detection can also be performed according to the actual situation and omnidirectional detection of the image can also be realized so that the photographing quality of the image can be effectively detected.

The invention discloses a positive dielectric anisotropy liquid crystal combination with rapid response. The positive dielectric anisotropy liquid crystal combination comprises 5-60 percent of first component, 1-50 percent of second component, 1-40 percent of third component, 0-40 percent of fourth component and an optically active compound, wherein the first component is formed from compounds with a structural formula I and a structural formula II, a compound with a structural formula III is used as the second component, a compound with a structural formula VI is used as the third component, a compound with a structural formula V is used as the fourth component, and the mass of the optically active compound is 0-0.2 percent of the mass sum of the liquid crystal combination. The liquid crystal combination has high charge retention, larger positive dielectric anisotropy, higher clearing point, good low-temperature stability, lower rotary viscometer and higher response speed and is particularly suitable for manufacturing active matrixes TN-TFT(Twisted Nematic-Thin Film Transistor), IPS (In-Plane Switching)-TFT liquid crystal display elements and liquid crystal displays.

The invention is applicable to glass panel sound hole defect identification, and provides a glass panel sound hole defect detection method. The method comprises the following steps: A, collecting an image of a sound hole of a glass panel and processing the image to get a sound hole image, and performing expansion operation on the sound hole image to get a sound hole gray image; B, getting a binarization threshold through gray statistics of the sound hole gray image, and carrying out binarization segmentation of the sound hole gray image to get a sound hole binarization image; C, analyzing and extracting the sound hole binarization image to get a hollow area image, and calculating the hollow area image to get a sound hole area-of-interest image; and D, identifying a defect according to the sound hole area-of-interest image, and marking the coordinates of the defect. According to the invention, a sound hole contour area-of-interest is extracted according to the contour features of the sound hole, a bright failure is detected and judged based on the neighborhood gray average, and further, sound hole edge chipping, cracking and uneven edge of a variety of models of glass panels can be detected.

Bright spots imaged by a forward-looking monochrome video camera during night-time operation of a host vehicle are detected and classified to determine the presence of leading and on-coming vehicles. A specified region-of-interest in each image frame is globally scanned to adaptively detect the bright spot contours, and search windows bounding the larger bright spot contours are locally scanned to adaptively detect individual bright spot contours that were fused in the global scan. A sensitive area within the region-of-interest is locally scanned to adaptively detect dim taillights of a leading vehicle, and path prediction of the host vehicle is used for frame-to-frame tracking of detected spots. Detected spots are classified depending on their location and frame-to-frame movement within the region-of-interest and their glare and pairing characteristics.