44results about How to "High commercial value" patented technology

The invention belongs to the technical field of nano-material preparation and concretely relates to a graphene oxide and graphene oxide quantum dot solvothermal controllable preparation method and a use thereof. The preparation method comprises that common graphite as a raw material is added with a certain amount of sulfuric acid and potassium permanganate, the mixture is stirred for some time, the mixed solution is added with nitric acid, the suspending liquid is transferred into a Teflon reactor, the mixture undergoes a solvothermal reaction, the reaction product flavescent transparent liquid is dispersed in deionized water, a certain amount of the solution is subjected to dialysis until pH is 7 so that the graphene oxide or graphene oxide quantum dot aqueous solution is obtained in a dialysis bag, and the aqueous solution is subjected to freeze drying so that graphene oxide or graphene oxide quantum dot powder is obtained. In preparation, the graphene oxide or graphene oxide quantum dot can be produced only by control of a reaction temperature and graphene oxide quantum dots with different particle sizes can be obtained by change of a ratio of graphite to potassium permanganate. The preparation method utilizes one-step solvothermal method, has simple operation and after-treatment processes, and has a short period, a low cost, no toxicity and no pollution. The produced material can be widely used in fields of photoelectric devices, anti-counterfeiting, biomolecule fluorescence labeling and bioimaging.

The invention discloses an advertisement sequence image fast retrieval and analysis method comprising the following steps: using image complexity characteristics and a decision classification tree method to divide an advertisement image database into LOGO and scene images; extracting and storing HOG characteristics and SIFT characteristics of images in the advertisement database; extracting HOG characteristics and SIFT characteristics of a to-be-coupled image, calculating HOG characteristic vector Euclidean distances between the to-be-coupled image and all images of same type in the advertisement database, ranking the Euclidean distances from small to big, and screening the front S candidate images; calculating SIFT characteristic coupling point pairs between the to-be-coupled image and the S candidate images, and using the image with the most pairs as the image corresponding to the to-be-coupled image; calculating time length of each advertisement according to the to-be-coupled image of the advertisement sequence, thus obtaining advertisement playing information. The advertisement sequence image fast retrieval and analysis method can ensure coupling accuracy, can save calculating time, and can improve image retrieval efficiency.

The invention discloses a method and equipment for embodying the human traffic of an advertising terminal. According to the technological means, a detection module and a display module are arranged, wherein the detection module is used for detecting the information of human traffic within a certain distance in front of the advertising terminal and is arranged on the advertising terminal, and the display module is used for independently displaying the accumulative quantity of people detected by the detection module in real time and is also used for displaying the time and the date or the duration in real time. According to the method and the equipment in the scheme, the detection module arranged on the advertising terminal is used for detecting the quantity of the people in front of the advertising terminal, and the human traffic of the district can be known by the advertising client and the public obviously through the simple real-time public display module; particularly, the display module can be also used for displaying the time and the date or the duration of detection, so that the objective human traffic evaluation can be conveniently carried out by the advertising client and the public; furthermore, according to the method, the structure and the circuit of the existing advertising terminal do not need to be changed to a great extent; the method has very high credibility and commercial use value, thus having very important significance on the advertising industry and far-reaching influence.