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Acquisition Control Features and Nodes

Acquisition control features in high-speed cameras from Emergent Vision Technologies support detailed management of image capture, critical for machine vision systems. They allow for precise adjustments in timing, exposure, and synchronization.

In the context of machine vision, where accurate timing and clear image quality are paramount, these features provide necessary control. Adjustments to trigger settings, exposure levels, and synchronization methods are key for applications involving fast-moving objects or precise measurement tasks. Compatibility with external time sources like precision time protocol (PTP) is also supported, facilitating seamless integration and synchronization within broader system architectures, essential for coordinated, high-speed image analysis and processing.

You can use the features with Emergent's eCapture Pro application. Alternatively, you can use the features with Emergent's eSDK API and the feature nodes. The \EVT\eSDK\Examples\EVT_AcquisitionControl directory contains example code that demonstrates how to programmatically use the acquisition control features.

Note: Each Emergent camera provides some or all of the following features and nodes, depending on the camera model.

Basic Acquisition Settings

The basic acquisition settings let you define basic parameters of image capture, including the mode (continuous or triggered), the speed of capture (frame rate), and the total number of images captured per session. These settings form the foundation for customizing image acquisition for different applications.

Basic Acquisition Settings and Nodes

Feature Node
Acquisition Mode AcquisitionMode
Frame Rate FrameRate
Frame Rate mHz FrameRatemHz
Acquisition Frame Count AcquisitionFrameCount

Acquisition Commands

The acquisition commands includes commands for starting and stopping the image capture process, giving you direct control over when data collection begins and ends. This capability is important for managing data collection efficiently and is fundamental to operating the camera within a larger system.

Acquisition Commands and Nodes

Feature Node
Acquisition Start AcquisitionStart
Acquisition Stop AcquisitionStop

Triggering Features

Triggering features control when and how the camera starts capturing images, allowing for both automatic and manual initiation based on external signals. This flexibility is crucial for applications requiring precise timing in image capture, such as capturing events or objects at specific moments.

Triggering Features and Nodes

Feature Node
Trigger Mode TriggerMode
Trigger Selector TriggerSelector
Trigger Source TriggerSource
Trigger Software TriggerSoftware

Exposure Management

The exposure management features manage the amount of light reaching the camera's sensor, ensuring optimal image brightness and quality. With automatic adjustments and fine-tuning capabilities, these settings help maintain consistent exposure levels across varying lighting conditions.

Exposure Management Features and Nodes

Feature Node
Exposure Exposure
Auto Exposure AutoExposure
Auto Exposure Set Point AutoExpSet
Auto Exposure Rate AutoExpIGain
Auto Exposure Max Exposure AutoExpMaxExp

Precision Timing and Synchronization

The precision timing and synchronization settings ensure that the camera's operation is precisely timed and synchronized with external systems or other cameras, especially important in setups requiring coordinated timing, such as in multi-camera systems or when integrating with external time sources like PTP.

Precision Timing and Synchronization Features and Nodes

Feature Node
Line Time LineTime
Frame Rate Line Time Sync FR_LT_Sync
Sync Sync
Sync Offset SyncOffset
PTP Mode PtpMode
PTP Status PtpStatus
PTP Acquisition Gate Time High PtpAcquisitionGateTimeHigh
PTP Acquisition Gate Time Low PtpAcquisitionGateTimeLow
PTP Offset PtpOffset

For information about other types of camera features, see Camera Features Overview.

Updated on
April 30, 2024
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