There are three types of aerial images based on the orientation of the camera axis: The choice of a particular kind of aerial photography is typically based on the subject and purpose of the imagery. There are several different kinds of aerial images in each of the three main categories. This photographic niche has a number of uses, but first let’s look at the various categories.
There are different kinds of aerial photography which experts categorize according to the camera axis (angle of the photo), the scale of the image (proximity and width of the area in the photograph), and the type of film. And, it is not the same as air-to-air photography where photographers are capturing images of other planes or airborne craft. To be considered an aerial photograph, you have to take the image with equipment that is not based on the ground. The term aerial photography refers to taking photographs from an elevated position, often using an airborne craft, including such equipment as rockets, airplanes, hot air balloons, and more recently, drones. Read more of our blogs on technological development blogs here or drop us an email to get in touch.Aerial photography is a fascinating niche that the pros use for many different purposes, and there are many different types of aerial photography. Explore your options and then head over to find your needed imagery. You don’t want to overspend on something that you won’t even need. Make sure to explore your options before choosing a type and resolution. You can also get imagery from GeoStore and Landinfo. But if you are a student, you are most likely to bag a discount of 20-30%. These variations can be because of vendors. High resolution imagery is costly and can vary in prices. The next question is, where can you find them? If you are a beginner, you can start with low resolution imagery from USGS. The main difference between Hyperspectral and MultiSpectral is the number of bands. After this successful launch, other hyperspectral satellites were sent into Space. The satellite recorded information from 242 bands with a resolution of 30 meters. In 2000, NASA launched a satellite called EO-1. Hyperspectral imagery contains hundreds of bands which are very narrow. The usage of which depends on what information you want to extract from them. Ahead of RGB, there are near infrared, short wave infrared and thermal bands as well. This results in a coarser resolution of the RGB imagery. And resultantly …? Yes, you guessed it right less energy. Since the window of visible light in the spectrum very small, the sensor receives less light. RGB images capture images only in visible light. Typically, multi-spectral imagery has information stored in these three band. I’m sure you are all familiar with RGB color scheme. A band is different images taken of the same place at the same time. MultispectralĬould it get more obvious? Multi-spectral imagery generally refers to imagery with 3-10 bands. The highest available resolution of panchromatic band is of 0.31 meters and is of WorldView 4.
Hence the panchromatic imagery is usually of the highest resolution. If the sensor is sensitive to a wide wavelength range of light, it will capture he objects it is “seeing” in more detail. A sensor shots a beam of light on the object, the beam reflects, the sensor records it.
When a sensor “looks” at an object, it is looking at the light of the object. To detect any object, the sensor on the satellite needs a certain amount of energy.
In simple words, panchromatic imagery is black and white imagery. There are three basic types of satellite imagery which is commercially available Panchromatic, Multispectral and Hyperspectral imagery. This article helps you with what type of imagery is available and which one you might need. But it’s okay to be confused in the start. Think of the scale what do you want to study? What color bands do you need. The first thing to decide is what do you want to do with the satellite imagery? Figure out your project. It all depends on what you want to do with it. There are so many different types and none of them is the wrong one, or the right one in that case. And that is exactly what’s so confusing about satellites. It helps in extracting useful information about aspects that we are generally not accessible. Satellite imagery is a powerful visual aid. Satellite imagery of intended resolution can be used to generate useful results in GIS applications.
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