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Jian Lu
Jian Lu, Pasadena, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110074932 | Accurate 3D Object Reconstruction Using a Handheld Device with a Projected Light Pattern - A lens and aperture device for determining 3D information. A projector projects an optical pattern toward a surface. The camera has at least two off-axis apertures thereon, arranged to obtain an image of the projected pattern including defocused information. The camera is movable between different positions to image the surface from said different positions, and the projector is at a specified angle of at least 5° relative to said camera. A processor carries out a first operation using information received through the apertures to determine a pose of said camera, and to determine three dimensional information about the object based on a degree of deformation of said optical pattern on said surface indicative of a three dimensional surface. An embodiment projects a grid of laser dots and uses laser-dot defocusing for approximate Z and thus grid correspondence, which can greatly increase the working depth of the system. | 03-31-2011 |
Jian Lu, Monrovia, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110037832 | Defocusing Feature Matching System to Measure Camera Pose with Interchangeable Lens Cameras - A lens and aperture device for determining 3D information. An SLR camera has a lens and aperture that allows the SLR camera to determine defocused information. | 02-17-2011 |
Jian Lu, Hong Kong HK
| Patent application number | Description | Published |
|---|---|---|
| 20100296770 | HIGH TEMPERATURE SUSTAINABLE FIBER BRAGG GRATINGS - An optical fiber | 11-25-2010 |
Jian Lu, Sunnyvale, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100226430 | Robust Single-Pass Variable Bit Rate Encoding - An encoding manager facilitates robust single-pass variable bit rate video encoding of a video sequence. Before encoding the video sequence, the encoding manager determines the size of a buffer to use for keeping track of over/under used bits generated during encoding. The encoding manager uses the target bit rate for the video sequence and the length of the video sequence to determine the size of the buffer. After allocating bits to a frame of the sequence, the encoding manager determines the quant to use to encode that frame. The determination of a quant to use to encode a frame is informed by the fullness of the buffer. The encoding manager adjusts the quant to use (and thus the aggressiveness of its encoding) in response to the amount of overflow generated thus far by the encoding of the video sequence. | 09-09-2010 |
Jian Lu, Kowloon CN
| Patent application number | Description | Published |
|---|---|---|
| 20100227192 | COMPOSITE STEEL PLATE AND METHOD OF MAKING A COMPOSITE STEEL PLATE - A composite steel plate includes at least two steel sheets rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction, between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheets and rolling the stacked sheets to form the plate. | 09-09-2010 |
Jian Lu, Ibaraki JP
| Patent application number | Description | Published |
|---|---|---|
| 20100107736 | DETECTION SENSOR, VIBRATOR - An object of the present invention is to provide a detection sensor and a vibrator which can offer improved sensitivity. The present invention uses a scheme in which no piezoelectric layer, drive electrode, or the like is provided on the surface of a vibrator | 05-06-2010 |
Jian Lu, Hong Kong Sar CN
| Patent application number | Description | Published |
|---|---|---|
| 20100101686 | NANOSTRUCTURED AUSTENITIC STEEL AND METHOD OF MAKING NANOSTRUCTURED AUSTENITIC STEEL - A method for producing a nanostructured austenitic sheet by consecutive martensite and austenite phase (γ/α′) transformations, in which the coarse grained austenite sheet transforms to nanocrystalline martensite by strain-induced transformation, and then generates reverse transformation to nanostructured austenite by warm rolling due to dynamic recrystallization. | 04-29-2010 |
Jian Lu, Laguna Hills, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090295908 | Method and device for high-resolution three-dimensional imaging which obtains camera pose using defocusing - A method and device for high-resolution three-dimensional (3-D) imaging which obtains camera pose using defocusing is disclosed. The device comprises a lens obstructed by a mask having two sets of apertures. The first set of apertures produces a plurality of defocused images of the object, which are used to obtain camera pose. The second set of optical filters produces a plurality of defocused images of a projected pattern of markers on the object. The images produced by the second set of apertures are differentiable from the images used to determine pose, and are used to construct a detailed 3-D image of the object. Using the known change in camera pose between captured images, the 3-D images produced can be overlaid to produce a high-resolution 3-D image of the object. | 12-03-2009 |
| 20100094138 | Imaging catheter using laser profile for plaque depth measurement - A device, system, and method for measuring the depth of a material layer such as a blood vessel plaque layer is disclosed. A fiber optic bundle housed in a balloon catheter projects a laser dot toward a conical mirror, which reflects the dot perpendicularly onto the surface of the plaque. The laser dot is reflected back from the plaque layer with a substantially Gaussian intensity profile. The conical mirror directs the reflected image back to the fiber optic bundle, which delivers the image to a sensor. The depth of the plaque layer can be determined by comparing the diameter of the image intensity profile to a pre-obtained normalized data set. | 04-15-2010 |
Jian Lu, Santa Clara, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100067792 | DIGITAL IMAGE CODING SYSTEM HAVING SELF-ADJUSTING SELECTION CRITERIA FOR SELECTING A TRANSFORM FUNCTION - In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions. | 03-18-2010 |
Jian Lu, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090141805 | Method and system for fingerprinting digital video object based on multiersolution, multirate spatial and temporal signatures - A method and system for generating a spatial signature for a frame of a video object. The method includes obtaining a frame associated with a video object, and dividing the frame into a plurality of blocks. The plurality of blocks corresponds to a plurality of locations respectively, each of the plurality of blocks includes a plurality of pixels, and the plurality of pixels corresponds to a plurality of pixel values respectively. Additionally, the method includes determining a plurality of average pixel values for the plurality of blocks respectively. Each of the plurality of blocks corresponds to one of the plurality of average pixel values. Moreover, the method includes processing information associated with the plurality of average pixel values and determining a plurality of comparison values for the plurality of blocks respectively based on at least information associated with the plurality of average pixel values. | 06-04-2009 |
| 20090324006 | METHODS AND SYSTEMS FOR MONITORING AND TRACKING VIDEOS ON THE INTERNET - Method and system for discovering and identifying a video object. The method includes crawling at least one predetermined website, discovering at least one video link at the predetermined website, processing information associated with a first database for storing one or more video links, and determining whether the discovered video link was already discovered before based on at least information associated with the first database. Additionally, the method includes, if the discovered video link is determined not to have been discovered before, updating the first database based on at least information associated with the discovered video link, downloading at least one video object based on at least information associated with the discovered video link, and processing information associated with the downloaded video object. | 12-31-2009 |
Jian Lu, Bellaire, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090264678 | CARRIER, A PROCESS FOR PREPARING THE CARRIER, AN OLEFIN EPOXIDATION CATALYST, A PROCESS FOR PREPARING THE CATALYST, AND A PROCESS FOR THE PRODUCTION OF AN OLEFIN OXIDE, A 1,2-DIOL, A 1,2-DIOL ETHER, OR AN ALKANOLAMINE - A carrier that may be used in the manufacture of an olefin epoxidation catalyst is provided that is prepared from a process involving depositing boron on the carrier and subsequently calcining the carrier. Also provided is an olefin epoxidation catalyst comprising a silver component deposited on such a calcined carrier. Also provided is a process for the epoxidation of an olefin employing such a catalyst and a process for producing a 1,2-diol, a 1,2-diol ether, or an alkanolamine employing the olefin oxide. | 10-22-2009 |
Jian Lu, San Gabriel, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080278570 | Single-lens, single-sensor 3-D imaging device with a central aperture for obtaining camera position - A device and method for three-dimensional (3-D) imaging using a defocusing technique is disclosed. The device comprises a lens, a central aperture located along an optical axis for projecting an entire image of a target object, at least one defocusing aperture located off of the optical axis, a sensor operable for capturing electromagnetic radiation transmitted from an object through the lens and the central aperture and the at least one defocusing aperture, and a processor communicatively connected with the sensor for processing the sensor information and producing a 3-D image of the object. Different optical filters can be used for the central aperture and the defocusing apertures respectively, whereby a background image produced by the central aperture can be easily distinguished from defocused images produced by the defocusing apertures. | 11-13-2008 |
| 20110301418 | Catheter Based 3-D Defocusing Imaging - A catheter based defocusing imaging system for 3-D tomography reconstruction of endovascular features of interest is disclosed. Without limitation, target sites for imaging include heart valves, calcified heart valves, calcium plastered valve on the heart valve or plaque on the inner wall of the blood vessel of a patient. | 12-08-2011 |
Jian Lu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20110252850 | Method and device of enhancing diffusibility of metallic surfaces and applications thereof - A method for increasing diffusibility of metallic surfaces and its applications in surface treatment of metallic implants, which combines a mechanic means and a chemical means, whereby the mechanic means increases the diffusibility of the surface while the chemical means forms a chemically modified surface layer for improved properties suitable for particular application of the metallic materials, especially in the bio-medical areas. This surface treatment can increase the hardness and corrosion resistance of stainless steel and reduces Ni release from implants made from NiTi wires. | 10-20-2011 |
Jian Lu, Union City, IA US
| Patent application number | Description | Published |
|---|---|---|
| 20120042412 | Methods And Compositions For Targeting Sequences Of Interest To The Chloroplast - Chimeric polynucleotides comprising a nucleotide sequence encoding a chloroplast transit peptide operably linked to a heterologous polynucleotide of interest are provided, wherein the chloroplast transit peptide comprises an amino acid sequence having the chloroplast transit peptide sequence as set forth in SEQ ID NO:1 or a biologically active variant or fragment thereof or wherein the chloroplast transit peptide comprises the sequence set forth in SEQ ID NO: 58 or an active variant or fragment thereof. Chimeric polypeptides encoding the same, as well as, cells, plant cells, plants and seeds are further provided which comprise the chimeric polynucleotides. Compositions further include HPPD polypeptides and polynucleotides encoding the same as set forth in SEQ ID NOS: 57 and 60 or active variants and fragments thereof. Such sequences comprise the chloroplast transit peptide as set forth in SEQ ID NO: 58 or an active variants or fragments thereof. Cells, plant cells, plants and seeds are further provided which comprise such sequences. Methods of use of the various sequences are also provided. | 02-16-2012 |
| 20120042413 | Compositions And Methods Comprising Sequences Having Hydroxyphenylpyruvate Dioxygenase (HPPD) Activity - Compositions and methods comprising polynucleotides and polypeptides having 4-hydroxyphenylpyruvate dioxygenase (HPPD) activity and having insensitivity to an HPPD inhibitor are provided. Further provided are nucleic acid constructs, plants, plant cells, explants, seeds and grain having the HPPD sequences. Various methods of employing the HPPD sequences are provided. Such methods include, for example, methods for producing an HPPD inhibitor tolerant plant, plant cell, explant or seed and methods of controlling weeds in a field containing a crop employing the plants and/or seeds disclosed herein. Methods are also provided to identify additional HPPD variants. Further provided are various methods and compositions that allow the various HPPD polypeptides and variant and fragments thereof to be expressed in a chloroplast or transported to a chloroplast. | 02-16-2012 |
| 20120042414 | CHIMERIC PROMOTERS AND METHODS OF USE - Compositions and methods comprising promoters from the 4-hydroxyphenylpyruvate dioxygenase (HPPD) gene and active variants and fragments thereof, as well as chimeric promoters employing regulatory regions of the HPPD promoters are provided. Further provided are expression cassettes and plants comprising the various promoters disclosed herein operably linked to a polynucleotide of interest. Methods employing the various promoters described herein to modulate the expression of polynucleotides of interest are further provided. | 02-16-2012 |