Ricoh Company, Ltd.

Nanjing University

Xiaomeng Wang

Liyan Liu

Shujuan Zhang

Xin Wang

Cheng Du

Ping Hu

Shengyin Fan

Pingping Pan

Weitao Gong

Minghui Li

Xiaojie Song

Bingdang Wu

Jiyuan Jin

Wentao Zhang

Disclosed is application of acetylacetone in inhibiting the growth of cyanobacteria, that is, acetylacetone is added in water disturbed with cyanobacteria, and the dosage of acetylacetone is not less than 7 mg/L to inhibit the growth of cyanobacteria. Acetylacetone inhibits the growth of cyanobacteria by inhibiting photosynthesis, has a better algicidal effect than common algaecides, is harmless to common bacteria such asandand is environmentally friendly and easy to popularize and apply.

Application of acetylacetone in inhibiting growth of cyanobacteria

The present invention provides a TiO-based coagulant and use thereof. The TiO-based coagulant is obtained by the following steps: uniformly mixing acetylacetone and ethanol and dropwise adding titanium tetrachloride to obtain a solution A; mixing deionized water and ethanol to obtain a solution B; dropwise adding solution B to solution A; stirring to obtain a sol, and then aging the sol to constant weight to obtain the TiO-based coagulant. The TiO-based coagulant can be used for treating waste water and algae-laden water. The TiO-based coagulant exhibits good coagulation effects and high stability, solves the problem of too low effluent pH caused by strong inorganic titanate acidity and is favorable to the subsequent treatment of waste water.

TiObase coagulant and its application

Disclosed are a method and a device for detecting traffic signs in an input image camera. The method comprises a color space converting step of converting the input image into a HSV color space image; a filtering step of filtering, based on a predetermined pass range of a standard color of each of the traffic signs, the HSV color space image to obtain a filtered image, and then generating one or more connected domains based on one or more regions in the filtered image; a removing step of removing, based on a standard rule of the corresponding traffic sign, at least one of the generated connected domains, not being the corresponding traffic sign, and letting others of the generated connected domains be candidate traffic sign domains; and a recognition step of recognizing, based on a feature of each of the candidate traffic sign domains, the corresponding traffic sign.

Traffic sign detecting method and traffic sign detecting device

Disclosed are a scene video switch system and a scene video switch method. The system comprises an input unit configured to input an image currently captured by a video capture unit to serve as a current image; a detection unit configured to detect all of interesting elements and latent elements in the current image so as to determine a maximum possible existing area of the interesting elements; a state switch unit configured to carry out, by using a predetermined finite state machine, switching between scene states of the maximum possible existing area according to predetermined different scene states and switching conditions; and a display unit configured to extract, based on a current scene state switched by the state switch unit, an area of concern coinciding with the current scene state from the maximum possible existing area to serve as a scene video for display.

Scene video switch system and scene video switch method

A method for detecting a front vehicle comprises: a moving light detecting step of detecting a front moving light area of an own vehicle in at least one image of a front scene of the own vehicle obtained at a time; a vehicle candidate generating step of extracting a light area pair from the detected front moving light area so that a front vehicle candidate is generated; and a vehicle candidate verifying step of verifying that the front vehicle candidate is the front vehicle in cases where the front vehicle candidate meets predetermined characteristics of a vehicle light.

Front vehicle detecting method and front vehicle detecting apparatus

Disclosed is a processing method used in a video conference system having a local terminal device and at least one remote terminal device, comprising a feature detection step of carrying out a feature detection in the local terminal device and the remote terminal device, respectively; a conference mode setting step of setting a conference mode for the local terminal device and the remote terminal device, respectively; and a video encoding step of dividing a video frame in the local terminal device and the remote terminal device, and then pre-processing the divided areas so as to encode the pre-processed areas, respectively.

Growing community of inventors

Beijing, China

Xiaomeng Wang