172results about How to "Improve viewing quality" patented technology

Systems and methods for providing high-quality region of interest (HQ-ROI) viewing within an overall scene by enabling one or more HQ-ROIs to be viewed in a controllable fashion, as higher quality ‘windows-within-a-window’ of regions (spatial subsets) of a scene.

A method is described including receiving a streamed leading content sub-clip, determining a set of needed content sub-clips, locating one of the set of needed content sub-clips and downloading the located content sub-clip. A system for providing content-on-demand is described having a peer, a server and a tracker. The tracker may be co-located with the server. The peer includes means for receiving a streamed leading content sub-clip, means for determining a set of needed content sub-clips, means for locating one of the set of needed content sub-clips and means for downloading the located content sub-clip.

A transflective liquid crystal display having a plurality of pixels, each pixel having a plurality of color sub-pixels. Each sub-pixel comprises a reflective electrode, a transmissive electrode connected to a secondary reflective electrode. The transmissive electrode is associated with a color filter, while one only of the reflective electrode and the secondary reflective electrode is associated with a color filter. The transmissive electrode is associated with a first charge storage capacitance. The reflective electrode is associated with a second charge storage capacitance which is adjustable depending on the operating states of the liquid crystal display.

The invention relates to a caption rendering technology in a field of producing television programs, in particular to a caption rendering method based on a curve-profiled closed loop domain and a pixel mask code matrix. The method is that: after a Bezier curve vector profile of a caption object is discretized into a polygon vector, according to the direction and embordering type of a polygon, the polygon vector used for embordering is further created, thus systematically combining the computer graphics with the digital image processing, converting the vector information of the caption object into the pixel mask code matrix based on a contour line and applying the pixel mask code matrix throughout all links of the caption rendering; therefore, the effect of the caption rendering is improved, the ever-increasing demands of the caption quality and the caption effect from the television programs producing and broadcasting organizations are sufficed, the important social property of serving the mass people by television media is reflected even more directly, and better social benefits are obtained.

The present disclosure provides a display device including a light emitting diode and a driving module. The driving module drives the light emitting diode. The driving module includes a first switch circuit, a second switch circuit, and a driver transistor. The first switch circuit selectively writes a gray scale voltage in a first capacitor. The second switch circuit selectively writes an offset voltage in a second capacitor. The driver transistor is coupled to the light emitting diode, the first capacitor, and the second capacitor. The driver transistor adjusts a driving current being outputted to the light emitting diode according to the gray scale voltage and the offset voltage. The gray scale voltage adjusts the voltage difference between the gate and the source of the driver transistor, while the offset voltage adjusts a threshold voltage of the driver transistor.

A near eye display system including a display screen, a graphic processing unit, a lens group, a focal length adjustment device, an interpupillary distance adjustment device, a detection unit, and a control unit is provided. Positions of a left-eye image and a right-eye image to be displayed on the display screen may be adjusted based on lateral displacement amounts of a left-eye lens and a right-eye lens, such that centers of the left-eye image and the right-eye image are respectively aligned with centers of the left-eye lens and the right-eye lens. Sizes (magnification) of the left-eye image and the right-eye image to be displayed on the display screen may be adjusted based on longitudinal displacement amounts of the left-eye lens and the right-eye lens, such that sizes of a visual left-eye image and a visual right-eye image seen by a user are identical. Operation methods thereof are also provided.

The invention relates to a flower antistaling agent with added plant growth regulator, wherein 1L of the water contains the following constituents: sucrose 5-20g, 8- hydroxyquinoline 0.1-0.5g, gibberellin 0.02-0.08g, cytokinin 0.01-0.09g, plant growth retardant 0.20-0.8g, arginine 0.015-0.045g, organic acid 0.1-0.5g and inorganic salt 0.005-1.5g.

The present disclosure provides a method for determining a recommended video, a data processing computer server and a system. The computer server determines candidate virtual scenes, users currently participating in the candidate virtual scenes, and a user corresponding to a virtual role in the candidate virtual scenes. After selecting a target virtual scene from the candidate virtual scenes, the computer server determines representation data of virtual roles of the target virtual scene, selects a target virtual role from the virtual roles of the target virtual scene according to the representation data of the virtual roles of the target virtual scene, and generates a recommended video at a viewing angle of the target virtual role in the target virtual scene.

The invention provides a self-adaptive bitstream switching method and system based on cache underflow probability estimation. The method includes the steps of 101) estimating a mean valve of video segment downloading time of each bitstream and a variance of the video segment downloading time of each bitstream at the current network conditions, 102) modeling arrival and departure of video data in a client cache into an Ek/D/1/N queuing model, setting parameters of the queuing model according to the mean values and the variances, and for each bitstream, utilizing the queuing model with the determined parameters to calculate the probability that cache queues are empty so as to obtain the underflow probability of each bitstream, 103) setting the underflow risk gain or loss of the current bitstream and the quality gain of each bitstream, and calculating comprehensive profit values according to the underflow risk gain or loss of the current bitstream, the quality gain of each bitsteam and the underflow probability of each bitstream when switching is performed between the bitstreams, and 104) selecting the bitstream with the highest comprehensive profit value to be switched , wherein video segments are obtained through equal duration division of copies of the bitstreams.

In a transflective liquid crystal display comprising a plurality of pixels, each is divided into three color sub-pixels in red, green and blue. Each of the color sub-pixels is further divided into a main sub-pixel and an auxiliary sub-pixel. The main sub-pixel comprises a transflective area and a reflective area. The auxiliary sub-pixel can be entirely transmissive, reflective or partially transmissive and reflective. The liquid crystal display further comprises a plurality of first gate lines for electrically controlling the main sub-pixels and a plurality of second gate lines for electrically controlling the auxiliary sub-pixels. The auxiliary sub-pixels may have a color filter for partially filtering light encountering the auxiliary sub-pixels according to the color of the color sub-pixels.

The invention discloses a digital video image stabilization method based on multi-resolution block matching and PI (Portion Integration) control. The digital video image stabilization method comprises the following steps of: obtaining a motion vector of a selected block through an improved diamond search algorithm, and obtaining a motion parameter of an overall motion vector by using least square estimation; then substituting the motion vector in a proportional-integral controller, namely a compensation unit of a core, so as to obtain a motion compensation vector; and further carrying out motion compensation on a fluctuation video sequence. With the adoption of the digital video image stabilization method disclosed by the invention, the fluctuation video sequence is subjected to fluctuation removal, so that the accuracy of the traditional diamond rapid search algorithm is improved, and the watching quality of a video is further improved. According to the acceleration of a chasing motion, the digital video image stabilization method can better keep a cashing component of a subjective motion and a subjective cashing motion of a photographer, so that the more accurate motion vector can be obtained through the estimation; the smaller stable state error is generated; and the fluctuation phenomena including translation, rotation, amplification and the like can be compensated according to demands.

The invention discloses a viewpoint-based panoramic video adaptive streaming media transmission method and system. The method comprises the steps: enabling a server to divide a panoramic video into different tiles in space, coding a plurality of tile videos into a panoramic video streaming file, and carrying out the packaging and slicing of the panoramic video streaming file; and predicting a visual field area watched by the user in the future by a client by using a linear regression method according to the historical viewpoint information of the panoramic video watched by the user, and playing the predicted panoramic video. According to the historical prediction deviation degree, the visual field area is properly expanded, the high code rate is selected for the tiles in the visual field area, the low code rate is selected for the tiles in the non-visual field area, and different code rates are dynamically selected for different tiles according to the network condition change, so that the video definition in the visual field area is improved, the jamming condition is reduced, and the user watching quality is effectively improved.

A touch color filter includes a substrate, a touch sensing layer, a black matrix layer, and a color filter layer. The touch sensing layer is located on the substrate. The black matrix layer is located on the substrate. A boundary of the touch sensing layer is located within a boundary of the black matrix layer. The color filter layer is located on the substrate. The touch sensing layer and the black matrix layer are located between the substrate and the color filter layer, and the color filter layer covers the touch sensing layer and the black matrix layer.

In a transflective liquid crystal display having a transmission area and the reflection area, the transmissive electrode is connected to a switching element to control the liquid crystal layer in the transmission area, and the reflective electrode is connected to the switching element via a separate capacitor to control the liquid crystal layer in the reflection area. The separate capacitor is used to shift the reflectance in the reflection area toward a higher voltage end in order to avoid the reflectance inversion problem. In addition, an adjustment capacitor is connected between the reflective electrode and a different common line. The adjustment capacitor is used to reduce or eliminate the discrepancy between the gamma curve associated with the transmittance and the gamma curve associated with the reflectance.

A system and method for extracting data from recording media scan a recording media so that a plurality of key frames and a plurality of time intervals can be extracted, wherein each of the plurality of key frames and each of the plurality of time intervals correspond to one of the scenes in the recording media. Afterwards, at least one selected key frame can be acquired. Eventually, a multimedia file can be outputted according to the selected frame. By acquisition of the plurality of key frames, the present invention allows of processing only key frames such that the amount of information needed processing can be reduced. Not all frames of the desired scenes are extracted from the recording media until a user output a multimedia file, so that the processing time for extracting data from the recording media can be concentrated in outputting multimedia files.

Systems and methods which provide Convolutional Neural Network (CNN) based synthesized view quality enhancement for video coding are described. Embodiments may comprise an encoder configured for CNN based synthesized view quality enhancement configured to provide improved coding efficiency while maintaining synthesized view quality. Additionally or alternatively, embodiments may comprise a virtual viewpoint generator configured for CNN based synthesized view quality enhancement configured provide post-processing of the synthesized view at the decoder side to reduce the artifacts. CNN based synthesized view quality enhancement may, for example, be provided for 3D video coding to improve its coding efficiency, which can be utilized in 3D scenarios, such as 3DTV.