Block with Coordinate System

youmagine

This model is engineered to illustrate the basic principle of three-dimensional scanning. The model measures precisely 80 millimeters in length along the x-axis and 40 millimeters in other dimensions. When viewed from a two-dimensional perspective at the origin of the coordinate system, like a webcam, the model appears to be 90 millimeters long. With a laser line positioned under an angle of 45 degrees, there is a notable offset in the line's projection. Knowing the angle allows for calculation of the block's height using the tangent function. When the angle is 45 degrees, the tangent value is 1, meaning that the horizontal offset of the laser line matches exactly with the height (z-axis coordinate) of the point. If a webcam captures video while moving the laser line, it becomes possible to scan the entire model and determine not only its width and length but also the precise height of each point on its surface by measuring the horizontal offset. To visualize the three axes inherent in the block's design, built-in coordinate axes are incorporated.