StreamPix 4/ PlugIn Modules

Image Levels

This allows to see the minimum, maximum and mean red, green and blue levels in an image. Once the Image Levels module is loaded, this docked dialog will be shown and will stay open until unloaded. If the minimum and maximum for one channel reads as 0 or 255, this could mean that one or more pixel of the image is under-exposed or saturated.

The Image levels module usefulness is reduced when working with an high-contrast image and, as the color levels are remapped for each image, it should be unloaded to lower CPU usage.

Live Levels

The Live Levels histogram monitor every frame captured by the grabber, computes their grey level averages and plots them in real time. TThe radio boxes enable selection of the display method for the histogram. Show here will set the graphic in the docked dialog and Show in a Display will show it in a new display in the Workspaces tab. It is recommended to use a multi-display configuration with the Show in a Display to allow viewing the image and histogram at the same time.

Sequence Levels

The Sequence Levels histogram allows to view the grey level averages for the frames in the current sequence. Everytime a frame is read from the sequence, the graph is updated to the new value. Browsing trough the sequence by using the sequence slider will provide a quick way to survey its general levels while pressing play will read and each frame in the playback sequence.

The radio boxes enable selection of the display method for the histogram. Show here will set the graphic in the docked dialog and Show in a Display will show it in a new display in the Workspaces tab. It is recommended to use a multi-display configuration with the Show in a Display to allow viewing the image and histogram at the same time.

Time Overlay

The Time Overlay allows to "burn" the time stamp associated with each images directly on the image itself. You can specify the font type, size, position and location on the image. The time can be written as absolute or relative to the first frame of the sequence. This can be useful when capturing/exporting to AVI or image files because those formats don't have time stamp support. By default, this module will burn the time when images have just been captured from the grabber, before they are saved or displayed. The advanced feature "Edit StreamPix Scripts" can be used to change this behaviour to do the burning when exporting or displaying the image.