Change Mosaic Dataset

Add Image

Function Description

After the Build Mosaic Dataset is complete, proceed to add the *.tif, *.tiff, *.imgImage Files from local or Cloud Storage to the current Mosaic Dataset.

Function entrance

  • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Add Image-> Add Mosaic in Workspace Manager-> Data source list Data dialog box.

Manage Mosaic Dataset

Function Description

In the Manage Mosaic Dataset, you can select an Image Dataset that does not build an Image Pyramid with one click and Create Image Pyramid for it. You can also delete the selected Dataset and Export File List.

Function entrance

  • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Manage Mosaic Dataset in Workspace Manager-> Data source list.

Rebuild Bounds

Function Description

When the data in Mosaic Dataset changes, for example, some images are deleted, new images are added, and Clip Bounds exist in the image, click this function to Mosaic DatasetRebuild Bounds. For the application of Rebuild Bounds, see Image Map Configuration-Rebuild Layer Bounds.

Function entrance

  • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Rebuild Bounds in Workspace Manager-> Data source list.

Parameter Description

Rebuild Bounds对话框中提供三种范围更新选择：Rebuild Footprint、Rebuild Boundary、Rebuild Clip Bound，用户可选择一种或多种范围进行更新。

  • Rebuild Footprint: Select this check box to rebuild the Mosaic Dataset outline range.
  • Rebuild Boundary: Select the check box to rebuild the boundary range of the image. Rebuild Bounds can be set in three ways: Auto calculation of boundary bounds., Select Dataset Bounds, and Custom Bounds.
    • Auto calculation of boundary bounds.: The system is based on the Image DataAuto calculation of boundary bounds.
    • Select Dataset Bounds: Rebuild Bounds through Region Dataset in Select Datasource.
    • Custom Bounds: Determine Scope of update by Draw Bounds and Select Object. Click the Drop-down Button on the right to select Draw Bounds and Select Object to select the boundary Scope of update.
  • Rebuild Clip Bound：勾选该复选框可Rebuild Clip Bound。提供三种Clip Mode：
    • Use Footprint Bounds

      You can build its crop area based on the contour of the image and update it to the crop child Dataset.

      The Complex Polygon option must be checked

      for irregular shapes of the valid area, and it is not necessary to check the Complex Polygon option for convex polygonal shapes of the valid area, but if it is checked, the correct crop area can also be obtained.

      When there is no value in the boundary of the clipping area determined by the image contour, the Clipping Offset amount can be set so that the clipping area is smaller than contour, that is, the area after the image contour is reduced inward by the specified pixel value.

    • Add Clip File:

      This method of obtaining image crop areas is applicable to crop area objects that already have each image. Each image crop area is required to be stored in a separate.shp file, and the.shp SHP File Name has the same name as the corresponding Image Files.

      In addition, when Add Image to Mosaic Dataset, Add Clip File: is also provided to update the entry of the clip child Dataset. See Build Mosaic Dataset-Read Clip Bounds " for details. If there is no corresponding.shp file for the image, the crop area still defaults to the outline of the image.

      The method of

      Add Clip File: is more suitable for the following image, the no-value area outside the effective area of a single image. The no-value is not a single value. This kind of image does not support automatic extraction of the clipping area.

      Figure: The null of the image null area is not unique
      After

      obtaining the image crop area, you can use the crop area to control the image to display only its Valid Range. In the Properties Panel of the Image Layer, set Crop Type to Dataset Clip. The display image will be cropped using the crop child Dataset, as described in the Crop the display image ".

    Caution:
    • Because the creation of the overview also uses the crop area of the image, if you rebuild Clip Bounds, you can consider whether to rebuild the overview based on the display needs of the overview.

    Crop Display Range

    Function Description

    Crop Display Range is used to set the Visible Bounds of the current Map:, Select Objects, Draw Rectangle, Draw Circle and Draw Polygon Show Settings are provided. You can also delete the Crop Display Range with the Clear button. Please refer to the Crop the display image for specific operation.

    Function entrance

    • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Crop Display Range in Workspace Manager-> Data source list.

    Reassign Image Path

    If the Original ImageFile Position in the Mosaic Dataset is changed or the path for generating the overview view needs to be re-assigned, the File Position path can be changed through Reassign Path.

    Function entrance

    • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Re-assign Image Path in Workspace Manager-> Data source list.
    Hint:
    • When you Reassign Image Data set path, it must be a full path.

    Balance Mosaic Dataset Colors

    Function Description

    The Balance Mosaic Dataset Colors specifies a standard image as the Target Dataset to guide the color balance, and the Mosaic Dataset will be color-corrected according to the standard image, so that the images can be displayed seamlessly.

    Function entrance

    • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Balance Mosaic Dataset Colors in Workspace Manager-> Data source list.

    Parameter Description

    • Standard image path: Set the path information of the standard image.
    • Color balancing method: Select a method to change the color of an image. Histogram Method and Homing Method are available. The Histogram Method is to correct the color of Mosaic Dataset according to the histogram information of the standard image; the Homogenization Method is to correct the color of Mosaic Dataset by setting the variance expansion coefficient and Brightness coefficient.
    • Variance expansion coefficient: it can be set when the uniform method is selected. When the Brightness coefficient is constant, if the variance is equal to 1, the image contrast effect is constant and consistent with the contrast effect of the Reference image; if the variance is less than 1, the contrast of the Result image decreases with the decrease of the variance value.
    • Brightness coefficient: can be set when the dodging method is selected. When the variance expansion coefficient is constant, if the pixel mean value of Reference Image is greater than pixel mean value of Original Image, the Brightness coefficient is larger. The higher the brightness of the Result image is; if the average value of the pixels of the Reference image is less than that of the Original image, the higher the Brightness coefficient is, the lower the brightness of the Result image is.
      • Hint:
      • Variance expansion coefficient and Brightness coefficient are available only when the Color balancing method is the dodging method.

    Clear Color Balance

    Function Description

    Clear Color Balance removes the set flat Mosaic Dataset color and restores the original color of the Mosaic Dataset.

    Function entrance

    • Mosaic Dataset Context Menu-> Change Mosaic Dataset-> Clear Color Balance in Workspace Manager-> Data source list.

    Related topics

    Overview of Mosaic Dataset

    Mosaic Dataset Display

    Build Mosaic Dataset