Depth Composition

Basics of Digital Depth Composition

Even when the depth-of-field is shallow and the overall focus is poor, some areas of a target are still in-focus. As the distance between the lens and the object change, the area of focus also changes. By moving the lens throughout the different focal planes on a target, the VHX captures every pixel that comes into focus at each level and combines them into a single, fully-focused image.

Extraction & composition
Focus at the highest point
Focus at the middle point
Focus at the lowest point

Real-Time Depth Composition

The advancement of depth composition technology also extends to processing speed in addition to image quality. No matter how brilliant a technique can be, it is not practical if the operation or calculation takes too long.
The high-speed processing technique of the VHX Series advances the technology to benefit users' analysis tools.
The real-time depth composition function allows you to display fully-focused images, in real-time, simply by moving the stage to the area of interest.
High-quality depth composition images can be generated in UXGA resolution with high-speed calculations and position/magnification correction.

How depth composition works
Capturing images: Focus on the lowest area. Camera instantly moves up and down. When real-time depth composition begins, images are captured sequentially at 50 frames per second. Among the captured images, the area with the best focus is selected as the base for depth composition. KEYENCE's original graphics engine processes image data quickly.