Patent application number | Description | Published |
20080225945 | Constant-quality rate control system and algorithm for regions of interest - A constant-quality rate control system and algorithm for multiple encoders with a single video source are disclosed. The system comprises a base encoder, a region of interest (ROI) detector, and at least one ROI encoder. The base encoder encodes a base video sequence which is a down-sampled version of a video sequence and sends the base video sequence to a multiplexer. The ROI detector extracts an ROI video sequence from the original video sequence. The ROI encoder encodes the ROI video sequence and sends it to the multiplexer. The ROI encoder uses information obtained during encoding of the base video sequence to improve the encoding of the ROI video sequence. The information of the base video sequence are used to better control the bit-rate and the quality of the ROI video sequence, | 09-18-2008 |
20090096878 | Digital image stabilization method - A digital image stabilization method that integrates a digital stabilization device and a digital video encoder is disclosed. The digital stabilization device comprises a determining module for determining background regions, a comparison module for calculating motion vectors, and an adjustment module for adjusting jerky image motion in frames. When there are frame jiggles, the motion vector between an I frame and a P frame is used for motion estimation to get a first motion vector and also define a background region of the P frame. Next, a second motion vector of a B frame is calculated according to the background region to adjust jerky motion of the P frame and the B frame for stabilization. The next P frame then uses the background region of the preceding P frame as its background region. | 04-16-2009 |
20090184915 | LOW-BACKLIGHT IMAGE VISIBILITY ENHANCEMENT METHOD AND SYSTEM - A low-backlight image visibility enhancement method and system is proposed for integration to a backlit type of display unit, such as active matrix LCD (Liquid Crystal Display). The proposed method and system firstly converts the image of each video frame into a brightness-based grayscale image; then decomposes the grayscale image into a low-pass base layer and a high-pass detail layer; and then performs a brightness compensation for the base-layer image and a contrast enhancement for the detail-layer image; and finally combines the two image layers into one single image and performs color conversion to the combined image. The resulted image is then used for display on the display unit. This feature allows the display unit to use a low level of backlight to save electrical power consumption while nevertheless allow the image to be displayed with good visibility. | 07-23-2009 |
20100049864 | MULTIMEDIA BROADCAST SYSTEM AND METHOD - A multimedia broadcast system and method supporting peer-to-peer (P2P) coordinated code conversion are provided. The method includes forming, by a data source device, one or more data segments from multimedia data, and then scattering the data segments to a P2P network formed by the viewers; wherein an individual P2P device is connected with one or more P2P devices via a network system to form a partner group, and then acquires code conversion degrees of each data segment to serve as a basis for strategically adjusting the coordinated code conversion of said multimedia data. The coordinated code conversion mechanism is supported by common P2P multimedia broadcast systems, and is capable of rapidly converting the multimedia data in one format into multimedia data in other different media formats, thereby enabling real-time broadcasting of data in different formats to clients using P2P networks of various specifications. | 02-25-2010 |
20100090863 | IMAGE-BASED VEHICLE SAFETY WARNING SYSTEM - An image-based vehicle safety warning system is disclosed, which uses an image retrieval module for receiving an image signal and camera parameters related to the source of the image signal into a space definition module, which defines an image space and warning areas of different levels in the image space. Then, an object identification module identifies parts of a possible vehicle in the image according to the image signal and variations thereof. A warning indication module then obtains an interrelation by locating the position of the vehicle within the image space and comparing the vehicle position with the warning areas, thereby providing alarms in different levels based on the interrelation. | 04-15-2010 |
20100135585 | Method and Apparatus of Tile-based Belief Propagation - A method and apparatus of tile-based belief propagation are disclosed. An image is split into a number of tiles. Messages are iteratively generated within each of the tiles based on the messages from neighboring pixels to the tile at a previous iteration, wherein each message represents information of a state of the pixel. The generated messages for sending out of the tiles are stored. Labels are then determined based on the stored messages, wherein each label represents the state of the pixel. | 06-03-2010 |
20100145892 | SEARCH DEVICE AND ASSOCIATED METHODS - A search device and associated methods use music emotions to browse, organize and retrieve music collections. The search device comprises a processor and an interface. The processor uses machine learning techniques to determine music emotion according to music features and organizes music by emotions for browsing and retrieving music collections. The interface connects to the processor and allows a person to retrieve desired music from the processor. Methods associated with the search device comprise a processor initialization method, a method of loading new music into the search device and several methods of retrieving desired music from the search device. | 06-10-2010 |
20100146528 | Method of Directing a Viewer's Attention Subliminally in Image Display - A method of directing a viewer's attention in an image display to enhance the perceived image quality and thus the viewer's preference of the image is disclosed. An image with an area of interest (AOI) is provided. The AOI is briefly displayed for a first time period. Subsequently, the image is normally displayed in its entirety for a second time period that is longer than the first time period. As a result, the viewer's attention is involuntarily directed to the AOI in a subliminal manner. | 06-10-2010 |
20100309289 | 3D Positioning Apparatus and Method - A 3D positioning apparatus is used for an object that includes feature points and a reference point. The object undergoes movement from a first to a second position. The 3D positioning apparatus includes: an image sensor for capturing images of the object; and a processor for calculating, based on the captured images, initial coordinates of each feature point when the object is in the first position, initial coordinates of the reference point, final coordinates of the reference point when the object is in the second position, and final coordinates of each feature point. The processor calculates 3D translational information of the feature points using the initial and final coordinates of the reference point, and 3D rotational information of the feature points using the initial and final coordinates of each feature point. A 3D positioning method is also disclosed. | 12-09-2010 |
20110008032 | AUTOFOCUS METHOD - An autofocus method for obtaining clear images characterized by: adjusting the lens position with an initial dataset of focus values to obtain a estimated lens position; moving the lens to the estimated lens position and acquiring the corresponding focus value; determining whether the estimated lens position is sufficiently proximate to the prior estimated lens position, wherein, if it is, the autofocus process stops, and, if not, repeating the above-described steps until a lens position having an optimal focus value is obtained, thereby obtaining the clearest image with increased focusing speed and reduced time of lens movement and without the need of empirical parameters. | 01-13-2011 |
20110022615 | DIGITAL DATA PROCESSING METHOD FOR PERSONALIZED INFORMATION RETRIEVAL AND COMPUTER READABLE STORAGE MEDIUM AND INFORMATION RETRIEVAL SYSTEM THEREOF - A digital data processing method for information retrieval and an information retrieval system thereof are provided. In an embodiment, the information retrieval system trains a personalized model according to a user's feedback perceptions of at least one information piece. With respect to information pieces and different users, the information retrieval system performs estimation, based on two different stages with a generalized model and the trained personalized model. | 01-27-2011 |
20110026910 | PHOTOMETRIC CALIBRATION METHOD AND DEVICE - A photometric calibration method includes: obtaining a target image and a reference image by a light field camera and transforming the reference image into a revised target image corresponding to the target image; calculating a photometric calibration ratio according to a function for correlating the target image and the revised target image by using a numerical algorithm; and the intensity of the target image is divided by the photometric calibration ratio to obtain a calibrated target image. A light field of a scene is formed by all of the calibrated target image so as to improve the quality of the light field. | 02-03-2011 |
20110141353 | METHOD OF REALISM ASSESSMENT OF AN IMAGE COMPOSITE - In a method of realism assessment of an image composite, the foreground and the background are transformed into a color space, such as YCbCr, followed by projecting the foreground and the background to a subspace represented by the axes representing chromatic information. The image composite is assessed in the projected subspace, according to linearity of color distributions of the foreground/the background, or according to distance between the color distributions of the foreground/the background and a center of the transformed color space. | 06-16-2011 |
20110142124 | PERCEPTUAL-BASED VIDEO CODING METHOD - A perceptual-based video coding method provides a perceptual-based rate-distortion (R-D) curve as a predictive R-D curve. The Lagrange multiplier for a current frame is then determined by deciding a slope, with sign reversed, of a tangent to the predictive R-D curve at a current point that is on the predictive R-D curve and closest to a previous R-D point of a previous encoded frame. The current frame is then encoded according to the determined Lagrange multiplier. | 06-16-2011 |
20110310962 | RATE CONTROL METHOD OF PERCEPTUAL-BASED RATE-DISTORTION OPTIMIZED BIT ALLOCATION - A rate control method of perceptual-based rate-distortion (R-D) optimized bit allocation is disclosed. An input frame is firstly determined as a key frame or non-key frame. A key frame is additionally encoded to generate rate-distortion (R-D) points. The R-D model of each basic unit (BU) is updated, followed by perceptual-based bit allocation, thereby generating a target bit rate. A quantization parameter (QP) is computed according to the target bit rate, and the current BU is encoded according to the QP. A rate-quantization (R-Q) model is updated if not all BUs have been encoded. | 12-22-2011 |
20120243858 | AUTOFOCUS SYSTEM - In an autofocus system, a focus measurement unit receives an image, and accordingly generates an associated focus value. A focus transform unit receives and then transforms the focus value provided by the focus measurement unit, therefore generating an associated transformed focus value. An in-focus position estimation unit obtains an in-focus position, in an analytical manner, according to some transformed focus values and some associated lens positions. | 09-27-2012 |
20130021578 | LEARNING-BASED VISUAL ATTENTION PREDICTION SYSTEM AND METHOD THEREOF - A learning-based visual attention prediction method is disclosed. The method includes a correlation relationship between the fixation density and at least one feature information being learned by training, followed by a test video sequence of test frames being received. Afterward, at least one tested feature map is generated for each test frame based on the feature information. Finally, the tested feature map is mapped into a saliency map, which indicates the fixation strength of the corresponding test frame, according to the correlation relationship. | 01-24-2013 |
20130235938 | RATE-DISTORTION OPTIMIZED TRANSFORM AND QUANTIZATION SYSTEM - The present invention is directed to a rate-distortion optimized (RDO) transform and quantization system. A frame classification unit classifies an input frame as either a key frame or a non-key frame. A rate model update unit generates at least one model parameter of a rate model according to a transform coefficient and a bitrate resulted from an encoded key frame. An RDO transform and quantization unit processes the input frame, thereby generating a quantized transform coefficient according to the model parameter. A frame buffer is used to store a previous frame, according to which the bitrate is estimated. | 09-12-2013 |
20140024961 | SYSTEM AND METHOD FOR DETECTING HUMAN EMOTION - An emotion excitement detection system includes a detection unit for engagement with human skin, an amplifier unit connected to the detection unit to amplify signal detected by the detection unit, a first control unit connected to the amplifier unit for measurement of skin conductance after the detection unit engages with the human skin and transmit result of the measurement and a processing unit producing a skin conductance slope in response to the skin conductance and excitement degree resulted from the skin conductance slope. | 01-23-2014 |
20140063268 | METHOD OF GENERATING VIEW-DEPENDENT COMPENSATED IMAGES - A method of generating view-dependent compensated images is disclosed. A uniform image is projected on a reflective screen, resulting in a first captured image. The distribution of specular highlight is predicted according to the first captured image, thereby obtaining model parameters. Calibration images are estimated according to the model parameters and a viewing angle, and a compensated image is generated according to the calibration images at the viewing angle. | 03-06-2014 |
20140255000 | VIDEO PLAYBACK SYSTEM AND METHOD BASED ON HIGHLIGHT INFORMATION - A video playback system and method based on highlight information are disclosed. The video playback system includes a user interface, an extracting unit, a determining unit, an adjusting unit and a playback unit. The user interface is configured to receive a control command, including a highlight mode command. The extracting unit is configured to extract highlight information from an input video, according to the highlight mode command. The determining unit is configured to determine at least one highlight video clip. The adjusting unit is configured to provide an adjusting playback velocity. The playback unit is configured to play the input video at the adjusting playback velocity according to the highlight mode command. | 09-11-2014 |
20150029205 | METHOD AND SYSTEM OF ENHANCING A BACKLIGHT-SCALED IMAGE - A method and system of enhancing a backlight-scaled image include a minimum perceptible luminance threshold of cone response with dim backlight being determined, and a luminance layer associated with an image being extracted. The luminance layer is decomposed into an HVS response layer and a background luminance layer for each pixel of the luminance layer. Luminance of dark pixels of the background luminance layer is boosted and compressed to a perceptible range above the minimum perceptible luminance threshold, thereby resulting in an enhanced background luminance layer. An enhanced luminance layer is generated through composition using the HVS response layer and the enhanced background luminance layer as inputs. | 01-29-2015 |
20150085162 | PERCEPTUAL RADIOMETRIC COMPENSATION SYSTEM ADAPTABLE TO A PROJECTOR-CAMERA SYSTEM - A perceptual radiometric compensation system adaptable to a projector-camera system includes a brightness scaling unit that scales down brightness of an input image and obtains appearance attributes by a color appearance model (CAM). A hue adjustment unit adjusts hue of the input image toward tone of a colored projection surface by the CAM. | 03-26-2015 |