Resource Base
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Region
Region is a parameter to specify a region in where to search barcodes. It is defined with RegionTop, RegionLeft, RegionRight, RegionBottom, and RegionMeasuredByPercentage:
Setting Methods
Region is supported to be set through RuntimeSetting or JSON template.
As PublicRuntimeSettings Member
Region can be set dynamically during runtime as a member of PublicRuntimeSettings struct.
Code Snippet in C++
//...other codes
PublicRuntimeSettings* pSettings = new PublicRuntimeSettings;
int errorCode = reader->GetRuntimeSettings(pSettings);
pSettings->region.regionTop = 25;
pSettings->region.regionLeft = 25;
pSettings->region.regionBottom = 75;
pSettings->region.regionRight = 75;
pSettings->region.regionMeasuredByPercentage = 1;
reader->UpdateRuntimeSettings(pSettings);
delete pSettings;
//...other codes
See Also
PublicRuntimeSettings:JavaScript | C | C++ | .NET | Python | Java | Java-Android | Objective-C & Swift
As JSON Parameter
Region as a JSON parameter is a RegionDefinition Object defined as below.
| Key Name | Key Value |
|---|---|
| RegionDefinition | A JSON object defined as below |
| Key Name | Key Value | Description |
|---|---|---|
| Name | A string value representing a unique name | The name of the RegionDefinition object. |
| Top | A number from [0, 0x7fffffff] when MeasuredByPercentage=0 or [0, 100] when MeasuredByPercentage=1 | The top-most coordinate or percentage of the region. |
| Left | A number from [0, 0x7fffffff] when MeasuredByPercentage=0 or [0, 100] when MeasuredByPercentage=1 | The left-most coordinate or percentage of the region. |
| Right | A number from [0, 0x7fffffff] when MeasuredByPercentage=0 or [0, 100] when MeasuredByPercentage=1 | The right-most coordinate or percentage of the region. |
| Bottom | A number from [0, 0x7fffffff] when MeasuredByPercentage=0 or [0, 100] when MeasuredByPercentage=1 | The bottom-most coordinate or percentage of the region. |
| MeasuredByPercentage | A number from [0, 1] | Sets whether or not to use percentages to measure the Region size. |
JSON Example
{
"RegionDefinition":
{
"Name": "RD1",
"Top": 25,
"Left": 25,
"Right": 75,
"Bottom": 75,
"MeasuredByPercentage": 1
}
}
Impacts on Performance
Speed
Setting Region to a appropriate value may speed up the process.
Read Rate
Region has no influence on the Read Rate.
Accuracy
Region has no influence on the Accuracy.
Yes
No