Release remote sensing images

Let's take a look at how to publish a three-band remote sensing image.

Conceptual differences between image, icon and picture

Visualizations acquired by satellites or other sensor equipment are generally referred to as "image" rather than "icon." The concept of "icon" has a broader connotation, and "image" is a kind of "icon". Image and fihure together constitute the icon world. "Image" mainly refers to the replica image world formed by photography, television, film, digital imaging, computer painting, and network image, and of course, it also includes remote sensing means.

"Picture" refers to the flat media composed of graphics, images, etc. Note the definition here that "icon" is not a kind of "picture". First of all, the picture is a medium (or medium) that actually exists (can be electronic); in addition, it is flat. "picture" is a form of expression of "icon".

Add remote sensing image

Similar to the Mapfile structure used earlier, but you need to define a remote sensing image data source:

01 MAP
02     EXTENT -180 -90 180 90
03     SIZE 600 300
04     SHAPEPATH "/gdata"
05     LAYER
06         NAME "topo"
07         DATA "land_shallow_topo_8192.tif"
08         STATUS OFF
09         TYPE RASTER
10     END
11 END

../geodata specified as MapServer will look for the base directory of the spatial dataset. The initial map range is determined by the coordinates of the specified southwest and northeast corners.

Here is the effect: