In remote sensing technology, the electromagnetic spectrum is usually divided into large and small sections, such as the large band area, such as the visible area, the infrared area, etc.; the medium band area, such as the near infrared, far infrared, etc.; and the small band area. Image Data can be divided into single-band images and multi-band images according to the number of bands. Single-band images are generally described by black and white grayscale maps, while multi-band images are often described by color maps of RGB composite pixel values, which means that the data of three bands are loaded through red, green and blue channels respectively to render them.

After the multiband Image DataAdd to Map, you can use a combination of any three available bands from the multiband Raster Dataset to create an RGB composite map. More information is typically gleaned from Dataset by co-displaying Multiband as an RGB composite map than by processing only one band.

In the case of Multiband, each band represents a portion of the electromagnetic spectrum acquired by the sensor. A band can represent any part of the electromagnetic spectrum, including the non-visible spectral range, such as the infrared or ultraviolet.

For example, a Satellite Image typically contains Multibands that represent different wavelengths, from the ultraviolet to the visible and infrared regions of the electromagnetic spectrum. For example, the Data Collection of the US Land Resources Satellite Image consists of seven different bands of the electromagnetic spectrum. Bands 1 – 7, including band 6, represent data from the visible, near and mid-infrared regions. Band 6 takes data from the thermal infrared region. Another example of a multiband image is a true color orthophoto image that contains three bands representing red, green, and blue light, respectively.

SuperMap does not support the synthesis of single band data into multi-band data, but supports the loading of combined multi-band data, and can set the bands corresponding to R, G and B channels respectively. Different band combinations highlight different features of ground objects. Seven bands of TM image data are taken as an example to illustrate the commonly used band combinations:

• 321 band: True color synthesis. Band 3, 2 and 1 are assigned with red, green and blue respectively to obtain a natural color synthesis image. The color of the image is consistent with the actual color of the source area or scene. It is suitable for shallow sea exploration and mapping, and is suitable for non-remote sensing application professionals.
• 432 bands: standard false color synthesis. Bands 4, 3 and 2 are respectively assigned with red, green and blue. Vegetation in the standard false color image is displayed in red, which can highlight the characteristics of vegetation. It is often used to extract vegetation information. It is the most commonly used band combination in the analysis of vegetation, crops, Land Use and wetlands.
• 453 band: the combination with the most abundant information. In the spectral images of 7 bands of TM data, the 5th band generally contains the most abundant information of ground objects. The synthetic images with bands 4, 5 and 3 endowed with red, green and blue respectively have obvious color contrast and rich layers, and the color display rules of various ground objects on the map are similar to those of conventional synthetic images. It is often used for visual interpretation and is also used to determine the boundaries of land and water bodies.
• 741 band: This band combination image has the advantage of being compatible with mid-infrared, near-infrared and visible Band Info, with rich colors, good sense of hierarchy, extremely rich geological information and surface environmental information, less interference information, high degree of address interpretation, and clear display of various structural features (folds and fractures). The boundaries of different types of rock areas are clear.