Introduction to pixel correction of image measuring instrument
1. Introduction to pixel correction of image measuring instrument 1 Definition: Pixel correction is to determine the corresponding relationship between the pixel size of the display screen and the actual size. 2 Pixel correction: ①After installing the software, the pixel correction must be performed before the previous measurement, otherwise the measurement will be a wrong result. ②Different lens magnifications correspond to different pixel correction result data, and pixel pre-correction must be performed for each magnification used. ③The camera components of the instrument, such as the CCD camera or lens, must be recalibrated after replacement or disassembly. 3-pixel correction method: ①Four-circle correction: The method of moving the same standard circle to the four quadrants of the cross line in the image area for correction is called four-circle correction. ②Single circle correction: the method of moving the standard ci 4-pixel correction operation method: ①Manual correction: manually moving the standard circle and manually looking for the edge in the calibration process. Usually used for manual image measuring instruments. ②Automatic calibration: Automatically move the standard circle and find the edge automatically during the calibration process. Usually used in automatic image measuring instruments. 5-pixel calibration standard: Please use the reference equipment provided by the image measuring instrument supplier for calibration, such as a glass calibration table. Note: Generally, manual image measuring instruments use four circles for manual calibration, while automatic image measuring instruments use four circles for automatic calibration. Single circle calibration is used for image measuring instruments with a non-movable worktable or worktable without a grating ruler.
Hydraulic universal testing machines have very high accuracy requirements.
The hydraulic system is the power drive mechanism of the tensile testing machine.
The specific application of the electronic universal testing machine in the automobile manufacturing process: The electronic universal testing machine needs to be used for automobile parts.
Wave soldering refers to the molten solder (lead-tin alloy), sprayed by electric pump or electromagnetic pump into the solder wave required by the design, can also be formed by injecting nitrogen into the solder pool, so that it is pre-loaded The printed board of the component realizes the soft soldering of the mechanical and electrical connection between the solder end or the pin of the component and the pad of the printed board through the solder wave.
The frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply.
Electronic universal testing machine is a necessary equipment to control the quality of products.
The calibration operation of the electronic universal testing machine is still relatively unfamiliar to friends who use it for the first time.
Selective wave soldering defects and their prevention.
Testing machine, broadly speaking, is an instrument that verifies the quality or performance of a product or material according to the design requirements before it is put into use.
The tensile force is not an accurate value after being measured by the testing machine, and subsequent calculations are required to get the desired value.
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