Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

153results about How to "Improve application" patented technology

Multi-target tracking method based on graph representation and matching

The invention discloses a multi-target tracking method based on graph representation and matching. Compared with the prior art, the method has the advantage that the defect of incapability of successfully tracking due to frequent interactive shielding of targets and similar appearance features in a video tracking technology is overcome. The multi-target tracking method comprises the following steps: inputting a tracking video, and generating target-reliable short tracks in adjacent time windows; building a spatial motion model which takes a graph as a framework and an appearance model which takes color and local two-value difference as features for the formed target short tracks; calculating the appearance feature and spatial motion similarity among the tracks; realizing relevant tracking of a target by using a weighted two-value graph matching framework; repeating the steps continually to obtain a motion track at all moments of each target. Through adoption of the multi-target tracking method, the target tracking accuracy and efficiency in a complicated scene are increased, and the application degree of a track tracking technology in various scenes is increased. Accurate tracking of the target in a complicated environment is realized by means of online learning of the appearance model and the spatial motion model.
Owner:HEFEI UNIV OF TECH

Method of manufacturing liquid discharge head and method of manufacturing substrate for liquid discharge head

A method of manufacturing a liquid discharge head including a pressure generating chamber communicated to a discharge port for discharging liquid and a piezoelectric element which is provided corresponding with the pressure generating chamber and includes a piezoelectric material film and a pair of electrode films sandwiching the piezoelectric material film, including: a step of preparing a structure with a single crystal Si layer being accumulated above a front surface of an Si substrate through an etching stop layer; a step of forming a buffer layer on the above described single crystal Si layer; a step of forming, above the above described buffer layer, the above described piezoelectric material film consisting of a single crystal thin film or a thin film which is directed in a preferential orientation to a direction of the polarization through one of the above described pair of electrode films; a step of forming the above described pressure generating chamber on the above described piezoelectric material film; and a step of etching a location corresponding with the above described piezoelectric material film of the above described Si substrate from a rear surface of the above described Si substrate to reach the above described etching stop layer.
Owner:CANON KK

Catalyst composition for oligomerization of ethylene and processes of oligomerization

The present invention provides a catalyst composition for the ethylene oligomerization, which comprises 2-imino-1,10-phenanthroline coordinated iron (II), cobalt (II) or nickel (II) chloride as main catalyst and triethylaluminum as cocatalyst. The present invention also provides a process for oligomerization of ethylene is provided, wherein a catalyst composition comprising 2-imino-1,10-phenanthroline coordinated iron (II), cobalt (II) or nickel (II) chloride as main catalyst and triethylaluminum as cocatalyst is used, and the molar ratio of aluminum in the cocatalyst to central metal in the main catalyst ranges from 30 to less than 200. According to the present invention, another process for oligomerization of ethylene is also provided, wherein a catalyst composition comprising 2-imino-1,10-phenanthroline coordinated iron (II), cobalt (II) or nickel (II) chloride as main catalyst and triethylaluminum as cocatalyst is used, and the temperature of ethylene oligomerization ranges from −10 to 19° C. According to the present invention, the price of cocatalyst i.e. triethylaluminum, is low, just a fraction of that of methylaluminoxane, the amount of cocatalyst is therefore significantly reduced, with the catalytic activity is still acceptable, thus the cost of ethylene oligomerization is significantly reduced. In view of both the catalytic activity and the cost, the present invention is highly applicable in industry.
Owner:CHINA PETROCHEMICAL CORP +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products