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How Does Camera Resolution Affect the Resolution of a Military Drone Camera?
How Does Camera Resolution Affect the Resolution of a Military Drone Camera?
The resolution of drone cameras determines both video quality and the accuracy of computer vision processing.military drone camera resolution A higher megapixel count results in smaller pixels which, in turn, means more detail in the images. This also increases the spatial frequency (the number of cycles per millimeter) of the image which, in turn, affects how well the image is resolved. For example, an image with a spatial frequency of two cycles per millimeter is considered to be fully resolved (able to distinguish black and white lines) while an image with a higher frequency is not resolved at all (only gray).
The highest resolution camera currently on the market is the ARGUS system from DARPA/BAE.military drone camera resolution This amazing surveillance drone has a total imaging unit that amounts to 1.8 billion pixels. This is enough to detect a single bird in flight or a lost toddler wandering around the corner. The resolution is also high enough to allow the operator to zoom in on a single object without sacrificing image quality.
This is the kind of resolution that makes it possible to fly high-resolution drones for long periods of time.military drone camera resolution A single image taken at this resolution contains a massive amount of data which takes up a lot of space on the drone and requires a lot of computing power to process. It is therefore not surprising that the ARGUS system produces one million terabytes of data every day, which is the equivalent of about 1,000 DVDs worth of footage!
When choosing the best military drone for your project, it is important to consider the pixel resolution of the camera. As the megapixel count increases, so does the size of the image which, in turn, impacts on flight times, storage requirements and processing time. A higher megapixel count also usually leads to bigger datasets which can be difficult to manage for large projects.
Whether or not you want to use your drone for photogrammetry will depend on how often you plan on using it and the areas you are looking to cover. High-end third party cameras and bolt-on cameras offered by leading drone manufacturers can have sensor-widths up to 40mm and megapixel ratings between 40MP and 100MP which are able to produce very accurate 3D models when used at a height of over 250 meters.
On the other hand, a built-in drone with a lower megapixel camera will allow you to fly at lower altitudes and still achieve the same quality of data. This can be particularly useful if you have limited access to safe flying altitudes on the job site or need to operate in residential areas.
It is worth noting that both 50 MP and 20 MP drones will be able to capture the same GSD of 2 cm or less when flown at 190 ft, however, the model created by the 50 MP camera will be superior to that of the 20 MP drone due to its larger sensor size. Therefore, if your budget allows it, a 50 megapixel camera is the way to go!
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