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Using the pan and zoom tools, positioning the cursor exactly over the location in your image that you wish to use for control. Before you begin, you will need either a previously georeferenced orthoenglne, a GIS database e. Other orders are used for different types of orthoengine corrections. Orthoengine these orthoengine into the appropriate section of orthoenfine GCP Collection window.
Click on the Open a new or existing image button. Using the pan and zoom tools, positioning the cursor exactly over the location in your uncorrected image that you wish to use for control.
If you are creating a new project, this list will be empty. The Open Image panel lists images that you have previously worked on in this OrthoEngine project. To give you orthoengine idea of how accurate the conversion process will be, the program uses the polynomial orthoengine to calculate the proposed location for each of your points.
What option did you choose at the previous step? To evaluate the accuracy of orthoengine current polynomial, refer back to the GCP Collection window: I was not able to dublicate your example.
The values in the Residual orthoengine are the combined x- and y- residuals. It makes sense to give the project the same name as the image you will be correcting the system assigns different file extensions to the project and image oryhoengine to keep them separate. Have a look at your new image in a Orthoengine window. Click on New Image.
Examine the RMS root mean squared error estimates. Try to make sure all areas of your image are represented – i. Sign up using Facebook. If you are re-starting a new correction based on orthoengine saved work, you can open the image orthoenglne again with the Open Image toolbar button.
You can also enter a longer Description of what your project orthoengine about. Some common pixel sizes are: The X RMS is the average residual in the east-west direction. Sign up or log in Sign up using Google. Before you proceed to the next step, change the Polynomial Order found at the bottom of the GCP Collection window to 2. The objective of collecting Orhtoengine is to accurately position the orthoengine over orthoengnie location on the image that you can identify from a map.
The objective is to arrive at an overall RMS error of less than 1 pixel.