The projection trapezoidal correction angle is not correct, indicating that the technology is not good

China Education Equipment Procurement Network News: We learned from Wanwei Home Grid that in today's society and life, the use of projectors is more and more frequent, so in the daily use of projectors, the position of the projector should be as close as possible. The projection screen must be at right angles to ensure the projection effect. If the projection cannot be vertical, the picture will be trapezoidal. In this case, the user needs to use the "Keystone Correction Function" to correct the trapezoid to ensure that the screen is a standard rectangle. Then let's understand how to make a little correction to the projector together with the editor.

There are usually two methods for keystone correction: optical keystone correction and digital keystone correction. Optical keystone correction refers to adjusting the physical position of the lens to achieve the purpose of adjusting the keystone. Another digital keystone correction is to achieve keystone correction through the software method.

At present, almost all projector manufacturers have adopted digital keystone correction technology, and most projectors using digital keystone correction support vertical keystone correction, that is, the projector can adjust its height in the vertical direction, and the resulting trapezoid By using the projector to perform trapezoid correction in the vertical direction, the picture can be made rectangular, which is convenient for users.

But in practical applications, in addition to the need for vertical keystone correction, trapezoids caused by the offset of the horizontal position of the projector are often encountered. Many projector manufacturers have developed "horizontal keystone correction function". Both horizontal keystone correction and vertical keystone correction belong to digital keystone correction, both of which are used to adjust and compensate the shape of the image before display by software interpolation algorithm. Horizontal keystone correction solves the trapezoidal distortion of the image in the horizontal direction due to the inability of the projector mirror and the screen to be perpendicular, so that the projector can also achieve a standard rectangular projected image on the side of the screen.

When digital keystone correction does not require high image accuracy, it can solve the problem of keystone distortion very well. It is very practical, but it is not suitable for applications that require high image accuracy. Because, after the image is corrected, some lines and character edges of the screen will appear burrs and unevenness, resulting in unclear clarity.

Kitchen Whisk

Professional cooking utensil whisk set is made of high quality durable stainless steel and use highly-polished processing method to bring the dual rust resistance protection of stainless steel. Ergonomically designed for excellent balance and control-for a difference you can really feel in the hand.

Stainless steel balloon whisk set is rust resistant, non stick and easy to clean. Dishwasher safe! The stainless steel ends allow for easy hanging on any hook in your kitchen, allowing for easy storage. A must-have for home cooks and restaurant chefs.

Stainless steel balloon whisk set makes cooking much easier and more enjoyable. Try the largest whisk for big bowls of pancake batter, the midsize one for beating eggs, and the littlest for blending a small batch of vinaigrette.

Wire WhiskStainless Steel WhiskWhisk9 2

Kitchen Whisk

Kitchen Whisk,Stainless Steel Wire Whisk,Stainless Steel Balloon Egg Whisk,Non-Stick Silicone Whisk

YANGJIANG TOALLWIN TRADING CO., LTD , https://www.kitchenknife.de