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38 results about "Local Group" patented technology

The Local Group is the galaxy group that includes the Milky Way. It has a total diameter of roughly 3 Mpc (or 10 Mly ≈ 10²³ m), and a total mass of the order of 2×10¹² solar masses (4×10⁴² kg). It consists of two clusters of galaxies in a "dumbbell" shape, the Milky Way and its satellites on one hand, and the Andromeda Galaxy and its satellites on the other. The two clusters are separated by about 0.8 Mpc and move towards one another with a velocity of 123 km/s. The group itself is a part of the larger Virgo Supercluster, which may be a part of the Laniakea Supercluster. The total number of galaxies in the Local Group is unknown (due to its partial occlusion by the Milky Way) but known to exceed 54, most of them being dwarf galaxies.

System and method for finding a picture image in an image collection using localized two-dimensional visual fingerprints

An image management method and system provides for storing, indexing, searching and / or retrieving image data. The content of an image collection is pre-processed to identify stable and repeatable keypoints for each image in the collection. Fingerprint information is computed from local groups of keypoints, and the resulting fingerprint information is stored in a compact fingerprint database. The computing of the fingerprint information is based on combinations of a subgroup of the strongest keypoints in an image, called anchor keypoints, in addition to a number of non-anchor keypoints. For each fingerprint in the compact fingerprint database, a sequence of candidate fingerprint combinations is generated and stored in a Fan Tree and / or hashtable and a corresponding fingerprint data structure. The sequence of fingerprint combinations allows several non-anchor keypoints to be missing, while still allowing the system and method to correctly detect fingerprints with high accuracy. A realtime image query is performed by identifying keypoints and computing fingerprints from the query image and matching the query fingerprints to the existing Fan Tree and / or hashtable fingerprint data to determine the best matching image or set of images within the collection. At least one target image is retrieved based on the determining operation, and the retrieved target image is displayed, printed, stored and / or transmitted.
Owner:INTEL CORP

Method for feature extraction using local linear transformation functions, and method and apparatus for image recognition employing the same

A method of extracting feature vectors of an image by using local linear transformation functions, and a method and apparatus for image recognition employing the extracting method. The method of extracting feature vectors by using local linear transformation functions includes: dividing learning images formed with a first predetermined number of classes, into a second predetermined number of local groups, generating and storing a mean vector and a set of local linear transformation functions for each of the divided local groups comparing input image vectors with the mean vector of each local group and allocating one of the local groups to the input image; and extracting feature vectors by vector-projecting the local linear transformation functions of the allocated local group on the input image. According to the method, the data structure that has many modality distributions because of a great degree of variance with respect to poses or illumination is divided into a predetermined number of local groups, and a local linear transformation function for each local group is obtained through learning. Then, by using the local linear transformation functions, feature vectors of registered images and recognized images are extracted such that the images can be recognized with higher accuracy.
Owner:SAMSUNG ELECTRONICS CO LTD

Local texture description method based on local grouping comparison mode column diagram

The invention provides a local texture description method based on a local grouping comparison mode column diagram. The method specifically comprises the following steps: step 1, selecting q supporting regions on the basis of an interest region; step 2, normalizing the supporting regions into circular regions; step 3, dividing circular images into P parts through convergence strategies based on mean value ordering; step 4, calculating a local grouping comparison mode of pixel coordinate points inside the circular images; step 5, counting a local grouping comparison mode column diagram in a local characteristic region according to the suffix of the local grouping comparison mode, so as to form local texture description of a single supporting region; step 6, cascading the local texture descriptions of the supporting regions to obtain a local grouping comparison mode column diagram for characteristic regions, and forming a local texture descriptor. According to the method, actually, a gray change column diagram for pixel point neighbourhood pixels with consistent gray values is calculated, and the descriptor formed by the method is strong in discrimination performance and has excellent robustness in illumination transformation and geometric transformation.
Owner:SHANGHAI JIAO TONG UNIV

Cultivation method of three-way-cross shrimp seeds

Disclosed is a cultivation method of three-way-cross shrimp seeds. The cultivation method includes the steps that firstly, a pond 3 mu-10 mu in area is selected for building a shrimp seed cultivation pond, and a shrimp ditch 1 m in width and 0.2 m to 0.3 m in depth is dug in the center of the bottom of the pond; secondly, the pond is sterilized and is subjected to dry-pond exposure before the shrimp seeds are bred, excessive silt is cleared away, every 70 kg-80 kg quicklime is subjected to slurry forming and is poured into one mu of the pond, the quicklime components vanish ten days later, and then the shrimp seeds are put to be bred; thirdly, breeding is carried out in the form that two-way cultivation is carried out firstly, Tai Lake and Hongze Lake parent shrimps are introduced according to the female-male ratio of 5:1 and are mixed and bred 15 kg per mu, and then three-way cultivation is carried out in the form that group shrimps obtained after cross-cultivating of the Tai Lake and Hongze Lake parent shrimps and local group shrimps are mixed and bred 10 kg per mu according to the female-male ratio of 1:1 during the first ten-day period of the April; fourthly, baits are fed at least one time every day in the young freshwater shrimp cultivation process; fifthly, the shrimp seeds are fished out of the pond, wherein shrimp seeds with the body lengths ranging from 0.8 cm to 1.2 cm can be fished out of the pond after 20 days to 30 days of cultivation or can be cultivated as shrimp species.
Owner:浙江吴越农业股份有限公司

Multi-objective elevator group control system and method

A system and a method for multi-target elevator group control. The system comprises: a group control analysis and calculation module (11), which is deployed in a cloud computing center and configured to analyze and calculate elevator operation data uploaded by each elevator, o as to determine a group control algorithm for group control of the elevators; a local group control execution module (12), which maintains a communication connection with the group control analysis and calculation module (11) by means of the Internet of Things, and which is configured to execute the group control algorithm derived by the group control analysis and calculation module (11); and an elevator control module (13), which is arranged corresponding to different elevators in a elevator group, which maintains a communication connection with the group control analysis and calculation module (11) by means of the Internet of Things, and which is configured to upload the elevator operation data to the group control analysis and calculation module (11). The multi-target elevator group control system and method complete an group control algorithm analysis on a cloud center, so that hardware configuration requirements are not high for a local group control device, thereby reducing the development and maintenance costs caused by constantly updating the hardware.
Owner:HITACHI BUILDING TECH GUANGZHOU CO LTD

Grid emergency power support method employing cooperation of multiple pumped-storage power stations

The invention provides a grid emergency power support method employing cooperation of multiple pumped-storage power stations. The grid emergency power support method includes starting emergency support according to an emergency support starting preparation command, an emergency support starting command and an emergency support target power command which are issued by a main station to the power stations; implementing the emergency support, to be specific, according to a load planning curve and the emergency support target power command, a power station grouping controlling system starts and stops the units and regulates the load; quitting the emergency support, to be specific, the main station issues an emergency support quitting starting command to the power stations, and the power stations start and stop the units and control the load; in the case that the emergency support target power reduces to 0, the main station issues an emergency support quitting completion command, and the emergency support process is finished. The grid emergency power support method has the advantages that based on the emergency reserve capability and the local grouping controlling functions of the pumped-storage power stations, the remote automatic pump cutting and filling function and the automatic generator unit starting function are achieved, the emergency support power is provided, and the grid frequency is restored.
Owner:EAST CHINA GRID +1
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