GE Saba Quick start guide

Type
Quick start guide

GE Saba is an X-ray Character Recognition software that operates as a module within the SABA 3000 image evaluation system. It is designed to automatically recognize numeric characters from cast-on clear text information (e.g., mold numbers) in X-ray radioscopic images. The software ensures accurate character recognition by adhering to specific requirements, such as using the ISO Standard Type font, maintaining a minimum character height of 10mm, and ensuring a constant proportion between the type elevation and material thickness.

GE Saba is an X-ray Character Recognition software that operates as a module within the SABA 3000 image evaluation system. It is designed to automatically recognize numeric characters from cast-on clear text information (e.g., mold numbers) in X-ray radioscopic images. The software ensures accurate character recognition by adhering to specific requirements, such as using the ISO Standard Type font, maintaining a minimum character height of 10mm, and ensuring a constant proportion between the type elevation and material thickness.

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We reserve the right to technical modifications without prior notice.
SEIFERT SABA 3000 XCR
X-ray Character Recognition
XrayXray
©2004 General Electric Company. All rights reserved.
GEIT-30068GB (6/04)
GEInspectionTechnologies.com
The SABA 3000 XCR software for X-ray Character Recognition acts as an additional
module within the SABA 3000 image evaluation system. It is designed for automatic
numeric character recognition.
The cast-on clear text information (e.g. mould numbers) is read from
the X-ray radioscopic image.
Produced under ISO 9001 certified quality management system.
Application
Technical Data
Font ISO Standard Type in accordance with DIN 6776 B vertical, with the following deviation:
Space between numeric characters = three times the line width, user scalable,
starting from 10 mm height at 100 µm/pixel.
Font sample:
Allowable numeric characters: 0, 1, 2, 3, 4, 5, 6, 7, 8 ,9
Minimum values of numeric characters, based on an image resolution of 100 µm/pixel
and an X-ray tube current of 4 mA:
Height (nominal size) 10 mm
Width (at nominal size) 5 mm, the numeric character 1 having a 3 mm width
Line width 1 mm, (-0.1 mm, +0.4 mm)
Minimum distance between numeric characters 3 mm
Required type elevation (minimum values) with given material thickness
Material thickness [mm] 5 10 20 30
Type elevation [mm] 0.75 1 1.6 >2.4
Numeric character slant approximately 3°
Numeric character arrangement in the image rectangular relative to the image border (0°, 90°, 180°, 270°)
Deviation of the character string position from the nominal position ± 2 mm
Deviation of the rotation (within the string) from the nominal position ± 2 °
GE Inspection Technologies
Xray
In order to obtain accurate character rec-
ognition results the following prerequisites
have to be met:
The font to be used is the ISO Stan-
dard Type for drawings in accordance
with DIN 6776 B vertical. This type is
characterized by high legibility.
Each individual numeric character
must be distinct in shape to prevent
confusion with others.
The distance between two numeric
characters must be three times the
line width (d).
The numeric character height (h)
must be at least 10 mm (see
Figure 1).
For serial inspection the numeric
characters in the image must always
appear in the same place.
The arrangement of the numeric char-
acters in the image must be rectangu-
lar. A diagonal arrangement prevents
them from being recognized.
The type must be highly contrastive.
The proportion of the type elevation
T1 to the material thickness T2 (see
Figure 2) must be constant through-
out the entire numeric character area
(see Figure 3) and be at least 1:10
given a numeric character height of
10 mm.
Example:
Given a 10 mm material thickness the
type elevation must be 1 mm (-0.2
mm, +0.8 mm).
No further structures (e.g. cooling
fins) must be in the numeric character
area as they will affect results.
In the numeric character area the
material thickness must be constant.
As the type elevation is limited for
reasons inherent in the casting pro-
cess, the numeric characters should
be placed in workpiece areas with the
least possible material thickness. This
is the only way to ensure a sufficiently
high contrast in the X-ray radioscopic
image.
Description
Figure 1 - Dimensions for 10 mm numeric character size
Figure 2 - Proportion T1/T2
Figure 3 - Numeric character area
The following points are important for X-ray character recognition on wheels:
The strip must not contain any other information
except for the numeric characters.
For all wheels of one type the strip must have the
same height position.
The number of numeric characters (3 in the example
on the right) must be the same for all wheel types to
be inspected in one plant.
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GE Saba Quick start guide

Type
Quick start guide

GE Saba is an X-ray Character Recognition software that operates as a module within the SABA 3000 image evaluation system. It is designed to automatically recognize numeric characters from cast-on clear text information (e.g., mold numbers) in X-ray radioscopic images. The software ensures accurate character recognition by adhering to specific requirements, such as using the ISO Standard Type font, maintaining a minimum character height of 10mm, and ensuring a constant proportion between the type elevation and material thickness.

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