46results about "Picture reproducers using projection devices" patented technology

A plurality of motion vector candidates is extracted, which includes motion vectors of a first set of blocks and a second set of blocks each adjacent to an object block. The first set of blocks has the same size as the object block. The second set of blocks has a smaller size than the object block. A first predicted motion vector of the object block is selected from the plurality of motion vector candidates. A residual cost of each neighboring motion vector is calculated. Each neighboring motion vector points a point within a predetermined range from a point pointed by the first predicted motion vector. A second predicted motion vector having the minimum residual cost is selected from the plurality of neighboring motion vectors. If the first predicted motion vector is equal to the second predicted motion vector, the first predicted motion vector is set as the motion vector of the object block. If the first predicted motion vector is not equal to the second predicted motion vector, a search region pointed by the first predicted motion vector is searched by block matching.

Systems and methods for scalable video coding using special inter-layer prediction modes (called telescopic modes) are provided. These modes facilitate accelerated operation of encoders with improved coding efficiency.

There is provided an optical member comprising: a first optical layer having: a first main face formed with a concave section having a concave curved surface, and a plurality of convex ridges having concave curved surfaces provided in concentric circular fashion around said concave section; and a second main face formed with: a convex section having a convex curved surface that is provided facing the concave section and constituting a second main face facing the first main face; and a plurality of convex ridges having convex curved surfaces provided facing the plurality of convex ridges having the concave curved surface, provided in concentric circular fashion around the convex section; and a second optical layer provided on the first main face of the first optical layer; and a third optical layer provided on the second main face of the first optical layer; wherein the refractive index of the first optical layer is higher than the refractive index of the second optical layer and is higher than the refractive index of the third optical layer.

A camera shooting system disclosed by the present invention comprises a first camera shooting device, a second camera shooting device, a laser projection device and a processor. The laser projection device is used to project the structured light patterns of the invisible laser to a common field of view of the first and second camera shooting devices, the first camera shooting device is used to acquire a first visible light color image and a first invisible light image in the common field of view, and the second camera shooting device is used to acquire a visible light gray-scale image and a second invisible light image in the common field of view, and the processor is used to utilize the first visible light color image and the visible light gray-scale image to synthesize a second visible light color image and utilize the first invisible light image and the second invisible light image to calculate a depth image. According to the present invention, the high-quality color image and depth image of a target can be acquired with a smaller size and the lower power consumption.

The embodiments of the invention relate to a method for projecting virtual reality panoramic video stream to a user, comprising the steps of dividing the panoramic video stream into multiple spherical subareas, providing different video qualities for the spherical subareas related to a user perspective and the spherical subareas unrelated to the user perspective according to user perspective information tracked in real time, and moving user observation points, thus realizing an optimal video reproduction effect and reducing the transmission bandwidth. The invention further relates to equipment for projecting virtual reality panoramic video stream to a user.

A method for calculating a direct mode motion vector for a bi-directionally predictive-picture includes: calculating S based on TRB, TRD, and N; calculating Tx based on MVx, the S, and the N; calculating Ty based on MVy, the S, and the N; obtaining a sum of the Tx, MVDx and δ1x, and using the obtained sum as MVFx; obtaining a sum of the Ty, MVDy and δ1y, and using the obtained sum as MVFy; obtaining a sum of the MVFx, δ2x, and a minus value of the MVx, and using the obtained sum as MVBx; and, obtaining a sum of the MVFy, δ2y, and minus value of the MVy, and using the obtained sum as MVBy.

A video encoder comprises a video frame receiver (101) connected to a processor (103) deriving relative frames from the received video frames and predicted frames. The processor is connected to a Discrete Fourier Transform (DCT) processor (105) which again is connected to a quantiser (107) for generating quantised spatial frequency coefficients for the relative frame. The output of the quantiser (107) is fed to a splitter that splits the data subset having low frequency components and a second data subset having frequency components. The first subset is used in the encoding loop comprising an inverse quantiser (111), inverse DCT processor (113), motion compensation processor (115, 117) and predicted frame processor (104). Hence, the encoding loop is simplified by only considering a reduced data set for each frame. A transmitter (119) transmits the video data as a progressively scalable stream for both the first and second data subsets.

The image projection system includes a projection-type display apparatus that projects an image onto a projection plane and has a first azimuth detector, the first azimuth detector detecting a projection azimuth; an imaging apparatus that images a projection screen of the image and has a second azimuth detector, the second azimuth detector detecting an imaging azimuth; and a signal processor that performs correction processing of the image. The signal processor includes an estimation unit and a correction unit, the estimation unit estimating an inclination of the projection-type display apparatus to the projection plane on the basis of the projection azimuth detected by the first azimuth detector, the imaging azimuth detected by the second azimuth detector, and the captured image acquired by the imaging apparatus; and the correction unit correcting a shape of the projection screen on the basis of the inclination of the projection-type display apparatus estimated by the estimation unit.

The invention discloses a touch projection mobile phone comprising a host and a base, wherein the base is in the shape of a groove, and the host is embedded in the base and is connected with the base through a microUSB interface. The touch projection mobile phone disclosed by the invention has the beneficial effects that an interactive projection kit is added to an ordinary smart phone, so that the smart phone has a short focus projection function, and the original small screen of the mobile phone is amplified to a 10-20-inch large screen; and an infrared camera kit is provided, so that the mobile phone not only amplifies the display image, but also facilitate the operation actions of a detector, thereby realizing a touch effect without changing the use habits of users.

The invention relates to a method for the dynamic regulation of projection and a projection display device. The technical problem to be solved by the invention is to provide the method for the dynamic regulation of projection. The method for the dynamic regulation of projection is suitable for a projection display device which is used for displaying output images and comprises a light source, wherein the light source is driven by pulse periodic signals. The method for the dynamic regulation of projection comprises the following steps of: (a) judging brightness parameters of the output images; (b) regulating the pulse periodic signals according to the brightness parameters; and (c) driving the light source by using the pulse periodic signals.

A method for optimizing a video transmission, in a constrained environment using a video coder adapted for coding the video data to be transmitted, includes determining one or more compression parameters for the video coder considered to transmit the video data at a given throughput or for a given quality. The method defines and uses reference charts for the coder considered, and predicts for the part of the video sequence undergoing compression, using the reference charts, compression parameters to be used, such as the quantization interval, by selecting a chart for which the targeted range of throughput or of quality is the closest in distance to the part of the sequence to be compressed, while complying with a given margin, and updates with an iterative method the prediction step to converge on the best choice of parameterization. The iteration includes at least one compression step followed by a verification step, to compress the video data to be transmitted with the parameters.

In distributing moving image data, it is an object to make it possible to start reproduction, not only from the head of the moving image data, but also from any desired position and to minimize an increase in the amount of the processing. A moving image data conversion device (1) comprises moving image data receiving means (2) for receiving moving image data (6), decoder configuration information saving means (3) for retrieving and holding decoder configuration information included in the moving image data (6) to define a condition for decoding the moving image data (6), decoder configuration information inserting means (4) for inserting the decoder configuration information into a plurality of predetermined positions in the moving image data (6) to generate moving image data, and moving image data output means (5) for outputting the generated moving image data as moving image data (8).

Enterprise communication display systems enable life-like images for videoconferencing and entertainment productions. Life-like images appear in a 3D environment where imaged people are visible through specially configured see-through displays. Imaged people can be viewed amongst a reflected foreground. Methods for enterprise-wide deployments for corporate, healthcare, education, theater which includes cinema and government communications, including hotel properties and a property management system are shown. Direct projection see-through screen configurations are created that eliminate unwanted secondary images in the room, conceal exposed projector lenses, reduce lens flare, makes practical multi-use room installations, images conferees among a room environment, enables touch screen interactivity, and utilizes extreme and other types of short throw projectors to reduce cost and bulk of common throw projectors. Of these transparent screens inventive configurations of substantially invisible mesh screens for both front and rear projection are described. Further, transparent LCDs are inventively configured to enable imaged life-size persons for videoconferencing in numerous configurations including with the light source removed from the LCD and placed away from the imaged persons. Further, display and camera configurations are revealed that improves the videoconferencing experience.

A method for improving brightness of projected images from an LED projector employing a plurality of LEDs of different colors by determining, from a histogram of a frame of an image to be projected, an effective maximum saturation. A plurality of main channels and a plurality of subchannels are created, one main channel and at least one subchannel for each color LED. Then the amplitude of the main channel and a subchannel for each color are determined based upon the effective maximum saturation of the frame of the image, followed by using the main channel and the at least one subchannel for a color to drive an LED of that color to generate the image.

A video decoder is provided which can convert analog composite video signals into noise-suppressed luminance and color difference signals without increasing the system in size. From the A/D converted composite video data, luminance component data carrying the luminance component and color difference component data carrying the color difference component are acquired. Then, dithering is performed on each piece of the luminance component data and the color difference component data for output as digital luminance and color difference signals.

Provided are a method, system and program for fractionally shifting input data subject to a first transform process without first applying an inverse transformation by using a second transform process. The second transform process applies a transformed matrix to the transformed data. At least one transformed matrix is provided in non-volatile storage, wherein each transformed matrix is generated by applying the first transform process to a fractional shift matrix operator. The input data that was transformed using the first transform process is received and the at least one transformed matrix is applied to the transformed input data to generate transformed data that represents fractionally shifted transformed output data.

The invention provides an automatic focusing method of projection equipment, the projection equipment and a computer readable storage medium. The method comprises the steps that in the automatic focusing process, if the focal length changes, shooting a curtain projection image of projection equipment; Performing gray scale processing on the curtain projection image to obtain a gray scale image; Performing spatial domain filtering processing on the grayscale image; Performing time domain filtering processing on the gray level image after the spatial domain filtering processing; Calculating thesharpness value of the gray level image after the time domain filtering processing; Judging whether the sharpness value of the grayscale image reaches a preset maximum sharpness value or not; If yes,finishing automatic focusing; And if not, returning to the automatic focusing process, and if the focal length is changed, shooting a curtain projection image of the projection equipment to circularlyexecute the process. According to the invention, interference signals and noise points in a shot image can be removed, and the accuracy of automatic focusing effect judgment is improved, so that theprojection equipment can display a clear projection picture after automatic focusing.

The present invention provides a method of supplementing a digital picture with a shorter delay time and less calculations. The padding method is applied to a picture having a great motion, and results in producing a prediction signal with small errors. The present invention also provides an apparatus using the same method. To be more specific about the method, in a digital picture data including picture information indicating an object, a picture is resolved into a plurality of regions adjoining with each other, and each of the insignificant sample value of a region containing the boundary of the object shape is supplemented (padded) by the values obtained from transforming of the significant pixels near to the insignificant pixels.