Abstract: A three-dimensional (3D) video reconstruction method, an encoder and a decoder are provided, comprising obtaining a list of video content screens or video content frames of an object from the 3D video; obtaining a list of depth screens of the 3D video; adding a shape screen to each video frame of the 3D video; superimposing each of the video content screens or video content frames with the depth screen and the shape screen to form a shape identification library; and storing the shape identification library at a header of a compressed file for unmasking of the object. The shape recognition list format may significantly reduce the storage size and increase the compression ratio by replacing the original shape with the identifications, and help improve the rendering quality.

Abstract: A three-dimensional (3D) video reconstruction method, an encoder and a decoder are provided, comprising obtaining a list of video content screens or video content frames of an object from the 3D video; obtaining a list of depth screens of the 3D video; adding a shape screen to each video frame of the 3D video; superimposing each of the video content screens or video content frames with the depth screen and the shape screen to form a shape identification library; and storing the shape identification library at a header of a compressed file for unmasking of the object. The shape recognition list format may significantly reduce the storage size and increase the compression ratio by replacing the original shape with the identifications, and help improve the rendering quality.

Abstract: Disclosed in the present invention are a method and a system for monitoring unmanned aerial vehicles based on three-dimensional light field technology. Provided is an unmanned aerial vehicle monitoring method based on three-dimensional light field technology, comprising: beginning unmanned aerial vehicle monitoring; by means of a light field camera, acquiring low resolution video image information; determining whether the acquired video image information is an unmanned aerial vehicle; performing graphic reconstruction on an unmanned aerial vehicle image therein; and acquiring reconstructed light field image depth and position information to monitor the unmanned aerial vehicle and emitting an alert. The method and the system for monitoring in the present invention are able to acquire a clear stereoscopic image, thus raising efficiency and accuracy in the process of unmanned aerial vehicle monitoring or detection.

Abstract: Disclosed is a light field technology-based unmanned aerial vehicle monitoring system. Said unmanned aerial vehicle monitoring system comprises: a first camera, configured to continuously obtain image information in a monitored area; a second camera, the second camera being a light field camera including a compound eye lens, and being configured to obtain, when it is determined that the obtained image information is of an unmanned aerial vehicle, light field information of the unmanned aerial vehicle; a vertical rotating platform and a horizontal rotating platform arranged perpendicular to each other, wherein the first camera and the second camera can rotate synchronously under the control of the vertical rotating platform and the horizontal rotating platform; and a computer processor, configured to calculate depth information of the unmanned aerial vehicle by means of the obtained light field information so as to obtain the position of the unmanned aerial vehicle.

Abstract: An adaptive 3D imaging system comprising an imaging part and a lens part detachably connected thereto; the imaging part comprising a sensor and a reflector configured to transmit a plurality of captured light field images to the sensor; wherein the lens part comprising a first camera lens positioned at a first end of the lens part, a second camera lens positioned at a second end of the lens part, an entrance pupil plane and matching device positioned between the first camera lens and the second camera lens and being adaptive to different focal lengths of the second camera lens, an internal reflection unit positioned between the first camera lens and the entrance pupil plane and matching device and configured to decompose the captured light field images and refract them into a plurality of multiple secondary images with different angular offsets. Methods and uses involving the 3D imaging system are included.

Abstract: The present invention relates to the technical area of lens, particularly discloses a lens for focusing or collimating light emitted from an extended light source, which comprises a front surface facing towards the extended light source and a back surface facing away from the extended light source, wherein at least one of the surfaces comprises a central section and a plurality of annular sections concentrically surrounding the central section; and wherein each of the annular section corresponds to a small portion of the extended light source. A method of designing the above lens is also disclosed. Additionally, the present invention provides a cost-effective lens design with high precision and more particularly, a lens design which meets the transmittance requirement for extended light source.

Abstract: A method, system and medium for improving the quality of 2D-to-3D automatic conversion in a computing device by using machine learning techniques is provided, comprising: receiving new 2D image from user input; recognizing multiple objects in the new 2D image by machine learning algorithm; obtaining the hierarchical relations among objects according to the features of the said objects; improving the quality of 3D image according to the hierarchical relations. The implementation of this invention provides a more distinct classification of objects in a 2D image, thereby improving the 2D-to-3D conversion in the computing device.

Abstract: An adaptive 3D imaging system comprising an imaging part and a lens part detachably connected thereto; the imaging part comprising a sensor and a reflector configured to transmit a plurality of captured light field images to the sensor; wherein the lens part comprising a first camera lens positioned at a first end of the lens part, a second camera lens positioned at a second end of the lens part, an entrance pupil plane and matching device positioned between the first camera lens and the second camera lens and being adaptive to different focal lengths of the second camera lens, an internal reflection unit positioned between the first camera lens and the entrance pupil plane and matching device and configured to decompose the captured light field images and refract them into a plurality of multiple secondary images with different angular offsets. Methods and uses involving the 3D imaging system are included.

Abstract: A method and a system for generating depth information associated with an image. The system comprises a segmentation module arranged to identify a plurality of objects represented by the image, wherein each object adjacent to another object are identified by an edge arranged to substantially separate the object and the adjacent object; and a processing module arranged to generate the depth information by assigning a depth value for each of the plurality of objects, wherein the depth value is arranged to represent a distance between the object and a reference point in a three-dimensional space.

Abstract: A method, system and medium for improving the quality of 2D-to-3D automatic conversion in a computing device by using machine learning techniques is provided, comprising: receiving new 2D image from user input; recognizing multiple objects in the new 2D image by machine learning algorithm; obtaining the hierarchical relations among objects according to the features of the said objects; improving the quality of 3D image according to the hierarchical relations. The implementation of this invention provides a more distinct classification of objects in a 2D image, thereby improving the 2D-to-3D conversion in the computing device.

Abstract: A method and a system for generating depth information associated with an image. The system comprises a segmentation module arranged to identify a plurality of objects represented by the image, wherein each object adjacent to another object are identified by an edge arranged to substantially separate the object and the adjacent object; and a processing module arranged to generate the depth information by assigning a depth value for each of the plurality of objects, wherein the depth value is arranged to represent a distance between the object and a reference point in a three-dimensional space.

Abstract: Method, equipment and apparatus for acquiring a spatial audio direction vector, the method including: determining a position of a sound source in a multi-sound system; setting a parameter comprising: a human response time ?t and a tolerance percentage ?; acquiring a sound signal from the sound source; and processing the sound signal by using the parameter and acquiring a corresponding spatial audio direction vector {right arrow over (E)} within each time interval ?t. A proportional constant D is determined according to a modulus of a spatial audio direction vector {right arrow over (E)}, and provides spatial information of depth for a virtual image corresponding to a multi-tone audio signal. A vector angle ?E the spatial audio direction vector {right arrow over (E)} provides spatial information of direction for the virtual image corresponding to the multi-tone audio signal, to improve viewer's viewing experience.

Abstract: The present invention relates to the technical area of lens, particularly discloses a lens for focusing or collimating light emitted from an extended light source, which comprises a front surface facing towards the extended light source and a back surface facing away from the extended light source, wherein at least one of the surfaces comprises a central section and a plurality of annular sections concentrically surrounding the central section; and wherein each of the annular section corresponds to a small portion of the extended light source. A method of designing the above lens is also disclosed. Additionally, the present invention provides a cost-effective lens design with high precision and more particularly, a lens design which meets the transmittance requirement for extended light source.

Abstract: Method, equipment and apparatus for acquiring a spatial audio direction vector, the method including: determining a position of a sound source in a multi-sound system; setting a parameter comprising: a human response time ?t and a tolerance percentage ?; acquiring a sound signal from the sound source; and processing the sound signal by using the parameter and acquiring a corresponding spatial audio direction vector {right arrow over (E)} within each time interval ?l. A proportional constant D is determined according to a modulus of a spatial audio direction vector {right arrow over (E)}, and provides spatial information of depth for a virtual image corresponding to a multi-tone audio signal. A vector angle ?E the spatial audio direction vector {right arrow over (E)} provides spatial information of direction for the virtual image corresponding to the multi-tone audio signal, to improve viewer's viewing experience.