Pulnix TS-9720EN Series Manual de instrucciones descargar pdf (Pagina 47)

Page 37

Installation and Operation

VIS 300/400 EN Setup Software

2.6.9 Focus Bar Waveform

The FOCUS BAR WAVEFORM window is opened when the Focus Bar is selected in the Toolbar. It can be

used for adjusting the camera focus or analyzing images.

FIGURE 45. Focus Bar Waveform Screen

The actual pixel values along the focus bar are shown in the graph.

If the focus bar is positioned across the license plate (see Figure 39 on page 32) the pixel values will

reflect the grey levels of the characters and the spacing.

A high pixel level belongs to a white image element and a low pixel value belongs to a black image

element.

When the amplitude of the graph is at a maximum then the camera is focused correctly.

The “White Level Cursor” and the “Black Level Cursor” can manually be dragged and positioned using

the mouse and the according levels are shown in the status bar in the button of the window. These are

marked Black Cur and White Cur. The distance between the two cursors is listed after Diff.

The two white dashed lines indicate the average level of the white pixels (the upper) and the average

level of the black pixels (the lower). These two levels are updated dynamically and are used for

calculating a relative focus value that is shown in the red column in the left side. The maximum relative

focus value obtained will be displayed as shown in Figure 45 on page 37 as a Max Level indicator line.

Double clicking the primary mouse button inside the column will reset the max level indicator.

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Pulnix TS-9720EN Series Manual de instrucciones Pagina 47