Image View
This function permits you to preview the contents of an image file. The image is displayed using the application software registered in the Windows registry to process image files.
To run this function: Choose File > Images > View an image, or...
Image file name
Enter the name of the image file which is to be previewed.
The size of the image files is a consideration when draping images over DTMs. Images resulting from aerial photography are commonly many megabytes in size. The smaller the size of the image file, the less memory will be used and the performance will consequently be faster.
Two strategies can be used to reduce the size of the image files to achieve optimum performance. These are:
- Crop the image so that only a rectangular region covering the area of interest is saved in a new file. This process is often sufficient to reduce the image size so that performance is acceptable.
- If cropping results in an unacceptably large image then you should attempt to scale the image. This process effectively discards pixels from the image (scaling by 50% discards every second pixel). Scaling with an appropriate value will often result in an image with an acceptable resolution and adequate performance.
Complete the IMAGE VIEW form and choose Apply to display the image.