Mitsubishi MELFA 4D-2CG5100-PKG-E, Инструкция по эксплуатации

Страница: 17 / 154

1 Summary
Explanation of terms 1-6
1.4.
Explanation of terms
This section explains the terms used in this manual.
CCD (Charge Coupled Device) ･ This is the most general pickup element used in cameras.
Degree of matching (score) ･････ This value indicates the degree to which the image matches the registered
pattern. This value ranges from 0 to 100. The closer to 100, the higher the
degree of matching.
Offline ･････････････････････････ This is a vision sensor mode for such work as setting the vision sensor
operating environment, setting the image processing, and backing up data to a
PC.
Online ･････････････････････････ This is the vision sensor mode in which the vision sensor executes image
processing under command from the robot controller.
Picture element (pixel) ･･････････ This is the smallest unit of data making up the image. One image comprises
640x480 pixels. Depending on the type of vision sensor, one image comprises
1024x768 or 1600x1200 pixels.
Contrast ･･･････････････････････ This is a yardstick expressing the "brightness" of a pixel in units from 0-255. The
smaller this value, the darker the pixel; the higher this value, the brighter the
pixel.
Calibration ･････････････････････ This is coordinate conversion for converting from the image processing
coordinate system to the robot coordinate system.
Threshold ･･････････････････････ This is the cutoff point for degree of matching scores.
Shutter speed ･･････････････････ This is the exposure time (the time during which the CCD accumulates charge).
Sort ････････････････････････････ This rearranges the order in which data (recognition results) is output to the
robot according to the specified item.
Trigger ･････････････････････････ This is the starting signal for starting the exposure (image capture).
Pattern matching ･･･････････････ This is processing for detecting the pattern that matches the pattern registered
from the captured image.
Vision program (job) ････････････ This is the program that executes such image processing as pattern matching,
blobbing, etc. The image processing can be set freely.
Filter ･･･････････････････････････ This is a form of image processing for improving the picture quality.
Blob ･･･････････････････････････ This is a type of image processing for detecting blobs with features in the image
captured. Bright sections are expressed as white; dark sections are expressed
as black.
Host name ･････････････････････ This is the network vision sensor name. This is registered in the initial settings.
Live ････････････････････････････ Images can be displayed in real time by shooting continuously.
Area
･･･････････････････････････
This is the processing area for executing image processing.
Log function ････････････････････ This function stores the image taken in with online operation and the execution
results (log).
Exposure ･･････････････････････ This is the accumulation of charge on the CCD. When light strikes the CCD,
charge accumulates and the degree of this accumulation becomes the degree
of brightness of the image.