Pan by holding down the left mouse button.įor navigating on the map refer to Marble handbook, Chapter 2.

You can zoom in and out with the mouse wheel by either scrolling it or hold and drag it. The GPS coordinates and the time information are displayed below the widget.

This tab shows a map of orientation where you will find a marker or a thumbnail to indicate the GPS location of the selected image. The Map tab on the Right Sidebar we are talking about here which shows the location of the image on a map and is purely informative. in Showfoto) and allows to set and to edit GPS data. The Geolocation Editor which is accessible via Item → Edit Geolocation. The Map View on the Left Sidebar of digiKam which is the search tool for finding images by their GPS data. the images in the album you selected in the Album View, the images with a certain tag assigned (selected in the Tag View), with a certain label and so on. The Map mode of the Image Area which displays images with GPS data on a map depending on the selection on the Left Sidebar, e.g. You can set the range in one of two ways: You can restrict the analysis of the Statistics field shown at the bottom of the dialog to a limited range of values if you wish. In this case a Logarithmic histogram will be more useful. However, for images that contain substantial areas of constant color a Linear histogram will often be dominated by a single bar. For images taken with a digital camera, the Linear mode is usually the most useful. With the Scale option you can determine whether the histogram will be displayed using a linear or logarithmic Y axis. If the layer is completely opaque or completely transparent, the histogram will consist of a single bar on the left or right edge.Ĭolors: shows the Red, Green, and Blue histograms superposed, so that you can see all of the color distribution information in a single view. Red, Green, Blue: show the distribution of intensity levels for the Red, Green, or Blue channels respectively.Īlpha: shows the distribution of opacity levels. Luminosity: shows the distribution of brightness values. The Histogram Viewer allows you to view each channel separately: A transparent pixel is encoded by 0 on the alpha channel an opaque pixel by 255. Thus, a black pixel is encoded by 0 on all color channels a white pixel by 255 on all color channels. Each channel supports a range of intensity levels from 0 to 255 (integer valued). Alpha channel is a Layer in the image that supports transparency (like PNG or GIF images). If you want to perform a histogram based color correction, use for example Color Balance, Levels Adjust or Curves Adjust in the Image Editor.Īn image can be decomposed into Red, Green and Blue color channels. It is purely informational: nothing you do with it will cause any change to the image. The Histogram Viewer shows the statistical distribution of color values in the current image.

If your photograph has a color cast you might be able to see what is wrong by looking at the histogram. The histogram for an image shows the amount of each color that is present and their different amplitudes within the image.

Digikam manual