Mixture Model

This page presents the window "Mixture Estimator" to be applied in image processing.


Learn more about Mixture Model in SPRING

Creating Mixture Model:

  • click on Image - Mixture Model... on the main menu. If there is no Mixture Model on the the current directory, answer the question by clicking on Continue and you will see the "Mixture Estimator" window;
  • in Model click on Layers Selection (the option Apply will be presented below) to create a new model or modify an existing one. This is the system default option;
  • click on Directory... and a window wiil be presented for the directory selection (see details on how to operate). In this directory the Mixture Model file will be created. By default, the directory where SPRING is installed will be selected.
  • click on Create... at the "Mixture Estimator" window. The window "Create/Modify Mixture Model" will be presented. This is the same window as the one used to edit or modify an existent model (see how to Create a model);



Applying a Mixture Model:

  • click on Image - Mixture Model... on the main menu. The "Mixture Estimator" window will be presented, in case it is not opened yet;
  • click on a model from the Models list and then click on Apply... . Observe that the window is changed and the chosen model becomes active. Click on View... if you want to see the data related to the selected model. In this case, you will see two windows: one with a Graphic and another with the summary of all components (check the description later in this page);
  • In the window IL´s Interest... must choose the ILs that will be used to apply the model. The "default" implies all categories of the model image, but click the option button and then on Input Category.... Use the "Category List" dialog box to choose (filter) which Image category will be considered. After choosing a category then click Run this last window. NOTE: Must be the same bands defined in the model; You can also change the name of the IL`s output and apply the images of error.
  • click on Bounding Box... in case you want to change the area where the model will be applied (see details on how to change the bounding box). If not informed will use the bounding box of the IL active;
  • After specifying the IL`s interest, modify the output names, request images of error and the rectangle of interest, if desired, then click on Execute. At this time window is displayed "Selected Images from different bands of the Model. Continue?", Click yes. And even if the exit plans already exist a new window will show if you can replace them. In which the user has the names of Proportion Images and Error Images;
  • Returning to the window Mixture Model. Define an Estimator: M.Q.P.(Weighted Minimum Square), M.Q.R. (Restricted Minimum Square - 3 components) or PRINCO (Principal Components);
  • Define on the window the parameters to calculate: Mean Error, Generate Error Images or Normalize[0,1]. The error is defined in equation (4) on page

    Learn more about Mixture Model in SPRING

  • click on Execute...
  • At the end of processing a new window will display the generated images and the calculation of total error and error for each band, if it was requested.

    If you wish to change data (components, bands and values), you should go back to the "Mixture Estimator" window and click on Change... . Then, on the "Modify Mixture Model" window, change what you want as if you were defining a new model.



    See also:
    Image Processing techniques
    About Mixture Model.
    Image Processing Menu