36results about How to "Guaranteed data accuracy" patented technology

In palette-based coding, a video coder may form a so-called "palette" as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a palette for a block of video data, identifying escape pixel(s) not associated with any palette entries, identifying a single quantization parameter (QP) value for all escape pixels of the block for a given color channel using a QP value for non-palette based coding of transform coefficients, dequantizing each escape pixel using the identified QP value, and determining pixel values of the block using the dequantized escape pixels and index values for any pixel(s) associated with any palette entries.

A device for testing bonding performance of a synthetic fiber and cement based material during the plastic stage contains a force transducer, a holder, a drive system and a computer. The upper end of synthetic fiber is fixed by the holder and the lower end is embedded in a cement matrix. The holder is installed on the force transducer. The cement matrix is linked with the transmission system. The end of the synthetic fiber clamped by the holder is fixed. Under the control of the computer, the transmission system drives the cement matrix to move such that the synthetic fiber is pulled out from the cement matrix. The force transducer inputs force parameters measured during the pulling process into the computer for test and analysis. The invention solves problems of large measuring range and insufficient precision of present test equipment. According to the invention, the whole process is completed by the operation of the computer, and corresponding measurement and control parameters are arranged for the synthetic fiber, so as to guarantee validity and accuracy of the test result.

The invention relates to a particle field optical holographic high-precision reproduction collecting system and a particle field optical holographic high-precision reproduction collecting method. A beam expanding alignment unit, a particle field information carrier, an imaging lens, and a charge coupled device (CCD) are arranged on the output optical path of a laser in turn, and the CCD is connected with a computer; the sensitive face of the CCD is positioned at the rear focusing face of the imaging lens; the particle field information carrier is a holographic photographic plate carrying particle field information; a carrier positioning and moving device comprises a three-dimensional translation platform; a CCD positioning and moving device comprises a one-dimensional translation platformand a lens focusing face positioning device; the lens focusing face positioning device comprises a positioning part and a standard partition plate; and the standard partition plate is arranged on oneend face of the positioning part, while the other part of the positioning part is connected with an object face side of the imaging lens. The device and the method solve the problems of low efficiency and low precision of the conventional optical path adjustment and low final data precision of the system caused thereby, realize accurate adjustment to the system optical path according to the lens imaging principle and improve the final data precision of the system.

The invention provides a measurement while drilling system for a drill carriage. The measurement while drilling system comprises a sensor module, a signal rod, a central processing unit (CPU) module and a display, wherein the sensor module comprises a three-axis acceleration meter, a three-axis gyroscope, a three-axis magnetometer, a temperature sensor and a current sensor; the signal rod comprises a digital signal processor (DSP) and a power supply module; the DSP comprises a power supply interface connected with the power supply module and a communication interface module connected with the sensor module; the CPU module comprises a controller area network (CAN) serial communication interface and a field bus interface; and the field bus interface is connected with a main control platform of the drill carriage. The measurement while drilling system for the drill carriage provided by the invention can be used for accurately positioning a drill of the drill carriage in real time; the accuracy of the obtained data information is good; the reliability is high; and the measurement while drilling system has a strong implementable property, and is suitable for a severe field environment with strong vibration and large torque.

The invention discloses an automatic three-dimensional high-definition camera cultural relic data protection device and method. The invention can realize efficient, high-precision and stable collection of cultural relic data, plays an important role in the inheritance and protection of cultural relic data, and can automatically perform multi-angle protection of cultural relics. , no shadow data collection, and multi-machine shooting at the same time, the collection efficiency is several times to dozens of times that of the traditional method, and because the relative position of the camera position and the supply light source is fixed, it has the characteristics of accurate positioning, uniform lighting, and stability, and no one is involved in the whole process. Intervention ensures data accuracy and high stability.

The invention discloses a method and a device for compressing industrial real-time data, which are applied to an industrial control system. The method comprises the following steps of determining a current data point to be stored in the industrial control system, and acquiring a latest stored data point in stored data points in the industrial control system for serving as a target data point; determining a compression time tag of the current data point according to a target time tag in the target data point and a current time tag in the current data point; determining the compression quality code of the current data point according to a target quality code in the target data point and a current quality code in the current data point; determining a compression floating point value in the current data point according to a target floating point value in the target data point and a current floating point value in the current data point; and integrating the compression time tag, the compression quality code and the compression floating point value to obtain a compression data point of the current data point.