Denso RC5 Dokumentacja Pobierz pdf (Strona 141)

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Chapter 5 Vision Control

5-1

5.1 Vision Control

This section explains commands to use the µVision board, which is optionally

built in the robot controller.

You should read this chapter when you create or enter a program using the

vision device.

5.1.1 Terms of Vision Control

5.1.1.1 Pixel

The µVision board treats image element data as a group of dots. One dot is

called pixel or image element.

The number of pixels handled by the µVision board can be expressed in pixels

on two different screens. The process screen storage memory is 512 by 480

pixels and the draw only screen memory is 624 by 480 pixels.

5.1.1.2 Brightness

Each pixel of image data processed by the µVision board has a value to

express lightness. This value is called brightness. The brightness value

ranges from 0 to 255, in 256 levels. The nearer the value is to 0, the darker the

image will be. Oppositely, the nearer the value is to 255, the brighter the image

will be.

5.1.1.3 Window

Set a window as shown in Fig. 5-1 to display the µVision board vision

processing range. With the window, the size is memorized for each window

number inside the µVision board. There are two ways to edit the window. The

first is with the vision manager and second is by the user program. Note that

window information, which is edited by the user program, is lost if you turn OFF

the power.

WindowMeasuring object

Fig. 5-1 Image Process Window

1 2 ... 136 137 138 139 140 141 142 143 144 145 146 ... 691 692

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