A method for calculating the driving field of view required area of ​​the front windshield of an automobile

Abstract

The invention discloses a driving vision area calculation method of an automobile front windshield. The method comprises steps that 1, a front windshield original picture with the black and white checkerboard is acquired and calibrated; 2, actual three-dimensional coordinate values of an A region, an A' region and a B region are calculated; and 3, the actual three-dimensional coordinate values areconverted into two-dimensional coordinate values on the front windshield original picture. The method is advantaged in that the A region, the A' region and the B region of the front windshield original picture are measured through a calibration coefficient, the A region, the A' region and the B region of the front windshield original picture can be objectively measured, the manual measurement error is reduced, and the method is suitable for automobile air-conditioner defrosting and demisting performance tests.

Description

technical field [0001] The invention belongs to the field of automobile control and detection, and more specifically relates to a method for calculating the driving field of vision requirement area of ​​an automobile front windshield. Background technique [0002] With the vigorous development of China's economy, cars have gradually become a necessity for people to travel. Automobile air conditioners have been widely used in automobiles, and the defrosting and defogging systems of automobile air conditioners have a vital impact on the driving safety and ride comfort of automobiles. If the car does not have defrosting and defogging capabilities or poor performance, it will seriously affect the driver's field of vision, causing the driver to be unable to continue driving the vehicle, and even more serious situations such as traffic accidents will occur. Therefore, in order to ensure that the vehicle can run normally in bad weather, any vehicle needs to have a defrosting and d...

AI Technical Summary

Problems solved by technology

At present, many companies do not have a set of standards to realize the display of A, A', and B areas on the front windshield when testing the defrosting and defogging performance of air conditioners. Areas A' and B, this test method will greatly reduce the test efficiency, the repeatability is not high enough, the test data is not accurate enough, there is no objective measurement, and the accuracy is not high enough, which will cause damage to the defrosting and defogging system tests of automobile windshields. Great impact, not a very good test method for car windshield defrosting and defogging systems

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