Today, two trapezoidal correction methods have evolved, manual trapezoidal correction and digital trapezoidal correction. Generally speaking, software is used to correct images to avoid distortion of horizontal images. Horizontal trapezoid correction technology also belongs to digital trapezoid correction technology. In addition to vertical trapezoid correction, many manufacturers have also developed horizontal trapezoid correction technology, which is the same as vertical trapezoid correction. The resulting trapezoid can make the picture rectangular through vertical trapezoidal correction by the projector, thus facilitating users' use. the projector can adjust its height in the vertical direction. This trapezoidal correction method supports vertical trapezoidal correction function, i.e. At present, most projector products basically adopt digital trapezoidal correction. Generally speaking, trapezoidal correction is basically divided into two types: optical trapezoidal correction and digital trapezoidal correction. Therefore, trapezoidal correction function came into being.Īt present, high-end projectors in the market have been basically equipped with trapezoidal correction function. However, in the actual operating environment, due to hoisting restrictions and site restrictions, it is completely impossible to achieve a perfect projection angle. If you want the projector to project a normal picture, it is better to form a relatively vertical position with the projected object. As projectors become lighter and more portable, the demand for simpler projector solutions is also growing. Projector is usually in a fixed position, which greatly limited the placement of furniture. Trapezoidal distortion occurs when the projector is not vertically aligned with the screen or when the projection screen has an inclined surface.Įarly projectors did not have trapezoid correction. We often see “trapezoid correction” when we buy projectors, so what exactly does trapezoid correction mean?
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