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Image format

feature category

feature name

discripton

features 
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titleImage format

The basic properties of the acquired image can be configured through

features in the Image Format category.

Pixel format

The Pixel Format feature is an enumeration allowing to specify the type of image data delivered to the application buffer. The available pixel formats differ among camera models. In general, they can be

  • Monochrome, with various number of bits per pixel, eg. Mono 8 or Mono 12.

  • Bayer encoded, with sensor-dependent Bayer formats, eg. Bayer GR 8 or  Bayer BG 8. In this case the application needs to decode the Bayer encodedimage buffer to get a proper color image — SynView API provides functions  for this.

  • RGB color format, providing true RGB output, in this case the Bayer decoding is performed directly by the camera.

Tip

It is an common sources of error to operate an monochrom sensor in the colour space. If you reviced an monochrome sensor you should change the Pixel Format to Mono 8 .

Image size

The camera will acquire full size image by default. The acquired image size can be reduced using the Width and Height features, which set the acquired image size in pixels. The field of view will be automatically centered within the full sensor image.

Acquisition parameters

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titleAcquisition parameters

The luminance of the acquired image can be controlled either explicitly through exposure time and gain functions, or automatically through corresponding auto-functions.

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titleExposure time

The Exposure Time feature in Acquisition Control category configures the length of the exposure in microseconds.

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titleAnalog gain

Analog gain to be applied on the sensor during acquired image digitization can be configured through corresponding features in Analog Control category. Verify that the Gain Selector feature is set to Analog (some cameras models support also digital gain). Now the Gain feature controls the desired analog gain value in decibel.

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titleAuto-functions

Selected camera models support automatic gain and/or automatic exposure functions, when the camera keeps adjusting given parameter automatically, to maintain constant image luminance. The features will be displayed in the feature tree only if the camera supports them. To switch the auto function on, navigate to corresponding control feature, Automatic Exposure in Acquisition Control category or Automatic Gain in Analog Control category and switch them from Off to Continuous.

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titleTriggered acquisition

The camera starts by default in “free running” mode — acquiring continuous stream of image frames. On the other hand in the triggered mode, the acquisition of individual frames can be explicitly controlled by hardware or software triggers. The trigger related features are located in the Acquisition Control category.

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titleTriggered mode

To switch the camera to triggered mode, open the Trigger Selector subtree and set Trigger Mode to On. After starting the acquisition again, the camera will acquire images only when explicit trigger signal arrives.

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titleTrigger source

The Trigger Source enumeration allows to select where should the camera “listen for triggers. You can select either Software or one of the camera's I/O lines. The assignment of the I/O lines to the connector pins is described in Section, “Connector and cable description” .

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