Vignetting Correction (BCON for MIPI)

Vignetting Correctionカメラ機能を使用すると、画像からビネットアーチファクトを除去できます。

情報

The pylon Viewer also has built-in functionality for correcting vignetting. However, you can't use this functionality with BCON for MIPI cameras.

機能を使用する

Vignetting means a darkening of the corners of an image compared to its center. It is a common effect in digital imaging and occurs when the pixels at the edges of the sensor don't receive sufficient light.

This can happen, e.g., because the image circle is too small in relation to the size of the sensor or because the light rays don't hit the sensor at right angles like they do at the center of the sensor. This means that the pixels at the edges have lower gray values.

Using the BslVignettingCorrectionMode parameter, you can turn the correction on and off.

サンプルコード

C++ (Native)C++ (Generic)C (Generic)

// Turn vignetting correction on
camera.BslVignettingCorrectionMode.SetValue(BslVignettingCorrectionMode_On);

INodeMap& nodemap = camera.GetNodeMap();
// Turn vignetting correction on
CEnumParameter(nodemap, "BslVignettingCorrectionMode").SetValue("On");

/* Macro to check for errors */
#define CHECK(errc) if (GENAPI_E_OK != errc) printErrorAndExit(errc)
GENAPIC_RESULT errRes = GENAPI_E_OK;  /* Return value of pylon methods */
/* Turn vignetting correction on */
errRes = PylonDeviceFeatureFromString(hdev, "BslVignettingCorrectionMode", "On");
CHECK(errRes);

pylonViewerアを使用して、パラメーターを簡単に設定することもできます。