2359 results about "Frame rate" patented technology

The present invention discloses methods of digitally converting 2D motion pictures or any other 2D image sequences to stereoscopic 3D image data for 3D exhibition. In one embodiment, various types of image data cues can be collected from 2D source images by various methods and then used for producing two distinct stereoscopic 3D views. Embodiments of the disclosed methods can be implemented within a highly efficient system comprising both software and computing hardware. The architectural model of some embodiments of the system is equally applicable to a wide range of conversion, re-mastering and visual enhancement applications for motion pictures and other image sequences, including converting a 2D motion picture or a 2D image sequence to 3D, re-mastering a motion picture or a video sequence to a different frame rate, enhancing the quality of a motion picture or other image sequences, or other conversions that facilitate further improvement in visual image quality within a projector to produce the enhanced images.

Video displays using relatively low frame rates of about 10 to about 20 frames per second, but having acceptable video quality are described. The displays may use bistable media, and may be driven such that the medium, when driven, changes its optical properties continuously during the driving of each frame. The displays may use an electro-optic medium such that the frame period is from about 50 to about 200 percent of the switching time of the electro-optic medium at the driving voltage used.

In a display device including a backlight and a display panel, the area of the backlight is divided into a plurality of unit regions; the display panel includes pixels which are larger in number than the unit regions; a frame rate of image data input to the device is converted to perform display while part of the unit regions in which black is displayed is in a non-light emission state; and the driving frequency of the backlight is converted in accordance with the display.

A method for using a capture device to capture at least two video signals corresponding to a scene, includes: providing a two-dimensional image sensor having a plurality of pixels; reading a first group of pixels from the image sensor at a first frame rate to produce a first video signal of the image scene; reading a second group of pixels from the image sensor at a second frame rate for producing a second video signal; and using at least one of the video signals for adjusting one or more of the capture device parameters.

A method and apparatus for capturing image data from multiple image sensors and generating an output image sequence are disclosed. The multiple image sensors capture data with one or more different characteristics, such as: staggered exposure periods, different length exposure periods, different frame rates, different spatial resolution, different lens systems, and different focal lengths. The data from multiple image sensors is processed and interleaved to generate an improved output motion sequence relative to an output motion sequence generated from an a single equivalent image sensor.

A digital camera for having a variable time duration burst capture mode, comprising: an image sensor; an optical system; a data processing system; a frame buffer memory; and a program memory. The program memory stores instructions including: specifying a first frame rate; initiating an image capture sequence; storing a sequence of digital images captured at the first frame rate in the frame buffer memory; determining whether the frame buffer memory has been filled to a predetermined capacity. If the frame buffer memory has been filled to the predetermined capacity, the program memory further includes instructions for specifying a second frame rate, wherein the second frame rate is lower than the first frame rate; designating a set of stored digital images that can be overwritten; and storing a sequence of digital images captured at the second frame rate in the frame buffer memory, overwriting the designated set of stored digital images.

A method for forming an output stream of data includes determining an output resolution for the output stream of data, determining an output frame rate for the output stream of data, determining an output color depth for the output stream of data, retrieving a first frame of data, a second frame of data, and a third frame of data from an input stream of data, the input stream of data having an input resolution, an input frame rate, and an input color depth, subsampling the first frame of data, the second frame of data, and the third frame of data to respectively form a first subsampled frame of data, a second subsampled frame of data, and a third subsampled frame of data, when the output resolution is lower than the input resolution, dropping the second subsampled frame of data, when the output frame rate is lower than the input frame rate, reducing color depth for the first subsampled frame of data and the second subsampled frame of data to respectively form a first reduced frame of data and a second reduced frame of data, when the output color depth is smaller than the input color depth, and converting the first reduced frame of data and the second reduced frame of data into the output stream of data.

According to one embodiment, a circuit configured to form an output video stream includes a resolution modification circuit configured to receive a plurality of video frames from a frame buffer, and configured to modify resolution of the plurality of video frames, when the desired resolution for the output video stream is different than a resolution of the input video stream, the plurality of frames of data derived from an input video stream, a frame reducing circuit coupled to the resolution reducing circuit configured to reduce a number of video frames in the plurality of video frames from the resolution reducing circuit, when a desired frame rate for the output video stream is different than a frame rate of the input video stream, a depth reduction circuit coupled to the frame reducing circuit configured to reduce bit depth of the plurality of video frames from the frame reducing circuit, when a desired bit depth for the output video stream is different than a bit depth of the input video stream, and a rate reduction circuit coupled to the depth reduction circuit, configured to scale the plurality of video frames from the depth reduction circuit, in response to a desired bit rate for the output video stream, and an encoder coupled to the rate reduction circuit, configured to encode the plurality of video frames from the rate reduction circuit into the output video stream is also contemplated.

A CMOS image sensor includes column-parallel ADCs. Each of the ADCs includes a comparator and an up/down counter. With this configuration, digital values of pixels in a plurality of rows can be added without using additional circuits, such as an adder and a line memory device, and the frame rate can be increased while maintaining constant sensitivity.

Methods, medium, and handheld, wireless devices which compress, enhance, encode, transmit, decompress and display digital video images in real time. Real time wireless videoconferences connect multiple handheld video devices. Real time compression is achieved by sub-sampling each frame of a video signal, filtering the pixel values, and encoding. Real time transmission is achieved due to high levels of effective compression. Real time decompression is achieved by decoding and decompressing the encoded data to display high quality images. A receiver can alter various setting including but not limited to the format for the compression, image size, frame rate, brightness and contrast. A zoom control can be used select a portion of interest of video being transmitted or being played back.

Methods and systems for processing computer game videos for virtual reality replay are disclosed. The method, when executed by a processor, comprises first receiving a video recorded using a virtual camera array during a game play of a source computer game. Next, upscaling the received video to a higher resolution, and interpolating neighboring video frames of the upscaled video for insertion into the upscaled video at a server. Finally, generating a spherical video from the interpolated video for replay in a virtual reality environment. The virtual camera array includes multiple virtual cameras each facing a different direction, and the video is recorded at a frame rate and a resolution lower than those of the source computer game. The spherical videos are provided on a video sharing platform. The present invention solves the chicken-and-egg problem of mass adoption of virtual reality technology by easily generating VR content from existing computer games.

An apparatus for controlling the position of a screen pointer for an electronic device having a display screen includes a light source for illuminating an imaging surface, thereby generating reflected images. An optical motion sensor generates digital images from the reflected images at a first frame rate. The motion sensor is configured to generate movement data based on the digital images. The movement data is indicative of relative motion between the imaging surface and the apparatus. The motion sensor is configured to modify the first frame rate to one of a plurality of alternate frame rates based on a current relative velocity between the imaging surface and the apparatus.

A method for estimating rendering times for three-dimensional graphics objects and scenes is disclosed. The rendering times may be estimated in real-time, thus allowing a graphics system to alter rendering parameters (such as level of detail and number of samples per pixel) to maintain a predetermined minimum frame rate. Part of the estimation may be performed offline to reduce the time required to perform the final estimation. The method may also detect whether the objects being rendered are pixel fill limited or polygon overhead limited. This information may allow the graphics system to make more intelligent choices as to which rendering parameters should be changed to achieve the desired minimum frame rate. A software program configured to efficiently estimate rendering times is also disclosed.

A method for simultaneously recording motion and still images, includes the steps of: capturing a motion image sequence and accompanying audio of a scene with a digital video camera adapted to record both motion and higher resolution still images; simultaneously capturing a still image sequence having a higher resolution and lower frame rate than the motion capture sequence; compressing the motion image sequence using interframe compression and the accompanying audio and storing the compressed motion image and audio data; and compressing the still images using intraframe coding and storing the compressed still image data.

A method and system generates and compares fingerprints for videos in a video library. The video fingerprints provide a compact representation of the temporal locations of discontinuities in the video that can be used to quickly and efficiently identify video content. Discontinuities can be, for example, shot boundaries in the video frame sequence or silent points in the audio stream. Because the fingerprints are based on structural discontinuity characteristics rather than exact bit sequences, visual content of videos can be effectively compared even when there are small differences between the videos in compression factors, source resolutions, start and stop times, frame rates, and so on. Comparison of video fingerprints can be used, for example, to search for and remove copyright protected videos from a video library. Furthermore, duplicate videos can be detected and discarded in order to preserve storage space.

A digital camera capable of capturing, displaying and recording images at appropriate frame rates is provided. When a current shooting scene mode is a non-sport mode, a current readout mode and a current display mode are set to a high-definition readout mode and a high-definition display mode, respectively, at the same time. Additionally, when a current operating mode is a moving image capturing mode, a current recording mode is also set to a high-definition recording mode at the same time. When the current shooting scene mode is a sport mode, on the other hand, the current readout mode and the current display mode are set to a high-speed readout mode and a high-speed display mode, respectively, at the same time. Additionally, when the current operating mode is the moving image capturing mode, the current recording mode is also set to a high-speed recording mode. The digital camera increases the image-capturing frame rate, the display frame rate and the recording frame rate in synchronism with each other in response to a change of the current shooting scene mode from the non-sport mode to the sport mode.

A multi-layer dental panoramic and transverse x-ray imaging system includes an x-ray source; a digital imaging device capable of frame mode output with a sufficient frame rate; a mechanical manipulator having at least one rotational axis located in a position other than the focal point of the x-ray source; a position detection mechanism for detecting the camera position in 1D, 2D or 3D depending of the complexity of the trajectory; a final image reconstruction mechanism for reconstructing the final images out of the stored frames; a real time storage system such as RAM, hard drive or an drive array able to store all the frames captured during an exposure; and a digital processing unit capable of executing the reconstruction algorithm, such components being interconnected in operational arrangement. The system produces selectively dental panoramic x-ray images, dental transverse x-ray images and dental tomosynthetic 3D images from a frame stream produced by a high-speed, x-ray digital imaging device.

According to one embodiment, a computer program product for a system including a processor includes a tangible memory including code that directs the processor to determine an output resolution for an output stream of data, code that directs the processor to determine an output frame rate for the output stream of data, code that directs the processor to determine an output color depth for the output stream of data, code that directs the processor to retrieve a first frame of data, a second frame of data, and a third frame of data from an input stream of data, the input stream of data having an input resolution, an input frame rate, and an input color depth, code that directs the processor to subsample the first frame of data, the second frame of data, and the third frame of data to respectively form a first subsampled frame of data, a second subsampled frame of data, and a third subsampled frame of data, when the output resolution is lower than the input resolution are also included, code that directs the processor to remove the second subsampled frame of data, when the output frame rate is lower than the input frame rate, code that directs the processor to reduce color depth for the first subsampled frame of data and the second subsampled frame of data to respectively form a first reduced frame of data and a second reduced frame of data, when the output color depth is smaller than the input color depth, and code that directs the processor to convert the first reduced frame of data and the second reduced frame of data into the output stream of data.

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.

A data streaming system comprises: one or more streaming sources, one or more streaming clients, a network connecting said streaming sources and said clients, and a level of service selector able for each data stream to monitor the network, the respective streaming source and the respective streaming client to control streaming to the respective streaming client to define a level of service of the data stream. For a video stream the level of service may define the frame rate, the resolution, the overall quality or a level of masking used.

Client signals to be transported in a transmission network, particularly an optical transmission network, may have different payload envelope rates and are digitally mapped on the client egress side into first transport frames (also referred to as iDTF frames, or intra-node or internal digital transport frames), at the client side for intra-transport within terminal network elements (NEs) and further digitally mapped into second transport frames (also referred to as DTFs or digital transport frames) for inter-transport across the network or a link which, through byte stuffing carried out in the first transport frames so that they always have the same frame size. As a result, the system of framers provides for a DTF format to always have a uniformly universal frame rate throughout the network supporting any client signal frequency, whether a standard client payload or a proprietary client payload, as long as its rate is below payload envelope rate of the client signal. At the client signal ingress side, the signal are digitally demapped from the second transport frames (DTF format) into the first transport frames where the stuff bytes are removed and accordingly processed at an intermediate node element before further transport, or digitally demapped from the first transport frames (iDTF format) to reproduce or reassemble the client signal or signals comprising the client payload at the client payload envelope rate for reception at the client's equipment. Among various features disclosed, two predominate features are (1) a single channel or network rate for transport of all signals between network elements (NEs) and end terminal network elements and (2) the digitally wrapping of different types of payloads into N client side or first frames using stuff bytes to render each client side frame size equal to a predetermined value. Then the stuffed first frames are wrapped into line side or second frames for transport over the network at the same high speed line rate for all digitally wrapped client signals. The client side framers may be, for example, running at the lowest signal rate encountered, to digitally wrap then into parallel N client signals or digitally wrap a client signal multi-sected into N parts, where these two different client signals have different payload rates.

A digital micro-mirror device (DMD) format conversion system for outputting a stereoscopic encoded optical signal using a DMD and a color wheel is provided. The DMD format conversion system includes a 3D data formatter for receiving an input signal and a DMD data formatter for receiving an output signal having stereoscopic image information and control information from the 3D data formatter and for outputting a DMD output signal having stereoscopic image information and control information. A color wheel control signal and output digital micro-mirror device data are synchronized based on an output frame rate generated by the 3D data formatter independent of the original input frame rate.

An image-taking apparatus includes an image-pickup element having a plurality of pixels; a control section selectively performing a first image-taking operation using the image-pickup element or a second image-taking operation at a higher pixel number or a lower frame rate than for the first image-taking operation; and a detecting section detecting a state of an image-taking object. The control section performs the first image-taking operation when the state of the image-taking object detected by the detecting section is within a predetermined range, and performs the second image-taking operation when the state of the image-taking object detected by the detecting section is outside the predetermined range.

Backlit display systems, such as those employed with LED backlit displays, including those configured for autostereoscopic operation, may employ synchronization between the backlight and the presentation of sequential left and right eye images at a frame rate exceeding approximately 100 Hz. To successfully directionally illuminate isolated frames, the disclosed principles provide for segmenting the directional illumination and introducing a phase shifted, synchronized, pulsed drive scheme for the illumination segments. Accordingly, the principles disclosed herein are directed to segmented directional illumination systems and related techniques for segmented directional backlight illumination.

A network camera apparatus is disclosed including an image requisition unit which obtains an analog signal of an image and converts this into digital format; an image compression unit which utilizes standard image compression techniques (JPEG, MJPEG) to decrease the data size; an image processing unit which analyzes the compressed data of each image, detects motion from compressed data, and identifies background and foreground regions for each image; a data storage unit which stores the image data processed by the image processing unit; a traffic detection unit which detects the traffic amount of the network and decides the frame rates of the image data to be transmitted; and a communication unit which communicates with the network to transmit the image data and other signals.

An image display apparatus for displaying a 3D video signal using a liquid crystal device such as an HTPS or LCOS device comprises a frame rate converter (3) that converts the input video signal to a doubled frame rate, a signal format converter (4) that converts the pixel sequence of the video signal, a light source controller (7) that outputs a light source control signal for turning the light source used for image display on and off, and a 3D glasses controller (8) that generates a glasses control signal (c3) for shutters (64R, 64L) that switch the transmission of the light to the right and left eyes of 3D glasses (64). The risk of crosstalk between the right and left images, due to device response speed is reduced, without requiring a large number of frame memories.

Methods, apparatuses, and computer-readable medium are provided for a frame rate up-conversion coding mode, where a bilateral matching mode can be used to determine motion information. In various implementations, local illumination compensation is disallowed from being used for a block when a bilateral matching mode is used for the block. In various implementations, a bilateral matching mode is disallowed from being used when local illumination compensation is used for the block.

Personal multimedia devices can detect when an incoming video format is different from a native format and make a local decision to convert incoming video formats to a format native to the personal multimedia device. The personal multimedia device may include a media processor that comprises an MPEG decoder/encoder, graphics processors, and a video decoder/encoder. These components increase a frame rate of a received video signal when the frame rate of the received video signal is less than a frame rate of the native video format of the personal multimedia device and decrease the frame rate of the received video signal when the frame rate of the received video signal is greater than the native frame rate of the set-top box. The graphics processor scales a frame resolution of the frames in the received video signal to correspond to the native video format.

An imaging system for capturing a sequence of images from a target at ultra-high framing rates is disclosed. The imaging system includes an illumination system operable to emit at least first and second light pulses at first and second wavelengths, respectively. The first and second light pulses sequentially illuminate the target whereupon at least first and second propagated light pulses emanate from the target. The system also includes at least first and second image sensors operable to receive the first and second propagated light pulses, respectively, to thereby capture the sequence of images from the target. Various exemplary embodiments of the imaging system and associated method are provided.

Device and method for converting a format of a video signal in a digital TV receiver is provided. Format conversion can be carried out at one chip of a format converting device, inclusive of conversion of resolution, frame rate, scanning method, aspect ratio, color space, chroma format, and gamma correction. Therefore, the digital TV receiver is made to convert a wide range of video signals inclusive of, not only a digital TV broadcasting signal, but also analog TV broadcasting signal, and computer video signal, at one chip of system block. Moreover, the digital TV receiver is made to provide a variety of standards of format converted video signals, not only to the connected display, but also to other general video signal processing devices.