evoVIU Manual
< Alle Themen

In this chapter, you will learn which setting options you have in the Configuration Bar of the Image Source.

1. overview

In the Configuration Bar you can make all kinds of settings for your image. You can change these settings at any time regardless of your stream’s activity. To have a better overview of the setting options, you can show and hide the individual sub-items at any time.

Unbenannt 1

2. acquisition

acquisition 1


In the image capture settings you can choose between the four different capture modes: Manual, Free Run, Hardware and Remote. In addition, settings can be made for the exposure mode, exposure time and frame rate. Depending on the mode, there are further setting options.

Mode 1: Manual

Manual mode is set by default. In this mode, you can take a picture manually using the yellow button in the Image Source Control Bar.

Exposure Mode

For the exposure mode, you can select either continuous or off. If you set the exposure mode to continuous, the camera permanently adjusts the exposure to the external conditions. If you set it to Off, you can set the exposure time manually.

Exposure Time

When the exposure mode is set to Off, you can select an exposure time between 68 and 2300000 microseconds. This determines how long the camera allows light to reach the sensor while the image is being captured. The longer the exposure time, the more light and the brighter the image will be in the end. If you see a black image on the first exposure, it is often because the exposure time is set too low.

Acqusition Frame Rate enable

Here you can decide whether you want to activate the acquisition frame rate or not.

Acqusition Frame Rate

If you have activated the Acquisition Frame Rate, you can select a value between 2 and 255.9 here. This value refers to the frames per second that are recorded.

Mode 2: Free Run

Your pictures are taken continuously in Free Run mode. Here you have the same setting options as in Manual mode and one more.

Frame Rate

You can select how many images per second should be recorded. Select a value between 1 and 30 fps. A high frame rate can have a negative impact on the performance of the camera.

Mode 3: Hardware

In hardware mode, a hardware trigger via the trigger pin of your smart camera’s docker connector triggers the recording. Three additional settings are added to the already known settings from the Manual mode.


For Delay you can set a value between 0 and 5000 milliseconds. Depending on the input value, image acquisition is delayed after the trigger.

Bouncing Time

You can select a value between 0 and 1000 for the bouncing time. This is the time to wait after a trigger before reacting to a trigger again. In this way, it can be avoided that several shots are taken in between due to faulty triggers.


Here you can set whether the image should be captured as soon as the trigger is released (rising) or as soon as the trigger is no longer perceptible (falling).

Mode 4: Remote

With the remote mode you can also capture the images manually, but not via the web interface, but via the http-rest interface. The setting options are the same as for the Manual mode.

3. auto function


Under the Auto Function subitem, you can make various settings that are already taken into account by the image sensor during acquisition.

Gain Auto

Here the gain can be adjusted automatically to achieve a certain brightness. With the gain function you can amplify the sensor signal and thus brighten up your image. If you want to set gain manually, select Off. The gain parameter appears. If you set Gain Auto to continuous , the gain value adjusts to the external conditions.


Enter a value between 0 and 33.06 to make your image brighter. All pixel values on the image are amplified when the gain is increased.


Gain value 0


Gain value 7


With this parameter you can adjust the gamma value. The values can range from 0.13 to 3. This allows you to optimize the image brightness for display on a monitor.

gamma hoch

Gamma value 2

gamma gering

Gamma value 0.45

Balance Ratio

This setting allows you to manually apply a color shift for white balance. White objects should appear white.


The anti-flicker setting allows you to combat streaking that may occur due to lighting. The different setting options determine the frequency.

Contrast Mode

For this parameter, the so-called S-curve is selected by default. This will increase the contrast of your image. With the S-curve, lighter tones are lightened further and darker ones are darkened further to obtain a high-contrast image.


You can adjust the contrast of your image here. If you select a negative value, the image becomes darker. If you select a positive value, brighter.


Here you can adjust the brightness. If you select a negative value, the image becomes darker. If you select a positive value, brighter.

Adaptive Tone Mapping

Here you can switch the Adaptive Tone Mapping of the image sensor on or off. The goal of tone mapping is to reduce the contrast range of images so that they can be displayed on conventional output devices.

3. color

color 1

Under the Color sub-item you can make various adjustments to the color settings of your image.

Pixel format

Here you can select Color or Mono as pixel format. The pixel format determines how the individual pixels are structured and how the image data is displayed.

Color Space

Here you can decide whether you want an sRGB color space or not. sRGB stands for Standard RGB and is the typical color space for graphics on the web. It makes sense to select the sRGB color space if the image brightness is to be optimized for display on a monitor.

Color Channel

Here you can set which of the color channels red, green or blue should be displayed.

4. focus

focus 1

Under this item, you can set the focus manually or automatically. If you want to set the focus manually, select a value between 0 and 255. This parameter is only relevant if a liquid lens is installed in your evoVIU. Then you can focus your object here.

Focus Length

Select a value between 0 and 255 here to adjust the focus and thus bring your image into sharp focus.


Kernel Size

A larger kernel size can enable more precise processing of the image and therefore better focusing of the object. However, a kernel size that is too large can also lead to unwanted artifacts or increased noise in the image, which in turn can lead to poorer focusing. It is important to choose the appropriate kernel size for autofocus depending on the application and the requirements of the camera.

Step Size

The step size is an important parameter that determines how accurately an algorithm processes an image. If the step size is too large, the autofocus may not capture the object accurately enough because it does not collect enough information about the entire surface of the object. If the step size is too small, however, the autofocus may take too much time to focus on the object, which in turn can lead to poorer performance.

Termination Criteria

Termination criteria specify when an algorithm should be terminated, based on certain conditions that must be met during processing. With regard to autofocus, termination criteria can be used to ensure that the autofocus focuses on the object before it ends the focusing process.

Image Depth

Image Depth refers to the number of color channels present in an image. The Image Depth can affect the accuracy of the autofocus, as the autofocus may have difficulty focusing on the subject due to differences in color depth.

Image Cycle Max

Image Cycle Max refers to the maximum number of images that can be captured and processed in a given period of time. The Image Cycle Max can be an important factor as the autofocus needs to work in real time to continuously monitor and adjust the focus of the subject. A low Image Cycle Max can result in the autofocus not being able to react quickly enough to changes in the image, which can lead to blurred images.

Activate auto focus

You can activate and deactivate the autofocus here.


Click on this button to start the autofocus. From here, the camera does the work for you.

fokus 77

Focal length 77

brennweite 217

Focal length 217

5. image format


Under the item Image Format you can set the number of pixels and accordingly the resolution of your image. You can set your desired width as well as the width, X offset and Y offset. The choice of image format also has an influence on the performance of the web interface.


Here you set the width of your image.


Here you set the height of your image.


Here you can move your image on the X-axis to get the desired image section.


Here you can move your image on the Y-axis to get the desired image section.


Click on Center to center all the above settings.

Pixel format

Here you can see with which pixel format output pixels are formatted. The pixel format determines how the individual pixels are structured and how the image data is displayed.


The Scaling parameter allows you to scale images from the sensor size to your image ROI.

Sharpness Enhancement

If you have processed your image with the Scaling parameter, you can increase the sharpness with the Sharpness Enhancement. To do this, you can select a value between 0 and 1. The higher the value, the sharper the image.

6. IO controller


Under this menu item you can set your IO controller to use external light.

IO Controller Connection

Here you can select your IO-Controller Connection. You must configure these beforehand under the Connections menu item.

Use IO controller

Select here whether the IO controller is to be used or not.

7. LED Area


Under the menu item LED Area you can control the light of your evoVIU. Depending on which light module you have installed, the display may look different. The boxes shown correspond to the individual LEDs.


If you select this setting and confirm the dialog, all LEDs are switched on simultaneously. The intensity is then also the same for all LEDs.

led area 1

If you want to select the LEDs individually, you can simply click on one of the boxes and the respective segment will open. Here you can now select which LED you want to switch on in the upper right corner. After the click, they turn yellow.


Set the intensity of the lights here. The higher the value, the brighter the LEDs shine.


Select whether the LEDs should light up permanently or flash.

8. pre-processing


Under this menu item, presettings for image processing can be made.

Capturing Stategy

Select how you want your picture to be taken here. You have the choice between Simple, Image Fusion and Double Shot.

  • Simple: The image is captured depending on the selected capture mode.
  • Double Shot: Two images are taken from two different sides and fused together.
  • Image Fusion: Four images are taken from the four sides and fused together to create a depth image.