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Human eyes are powerful electromagnetic wave detectors that react at wavelengths between 400 nm (purple) and 700 nm (red). However, the wave spectrum is much larger and invisible to our eyes.Today, technology allows us to have special cameras to detect a greater range of frequencies, these are called hyperspectral cameras, and they are capable of obtaining complete information from a band of the spectrum.<h2>Operation: Sensors And Many Colors</h2>To understand how it works, if we inspect the sensor, we will see that the way it operates is very similar to the camera that our cellphone has, but a little more complex (and expensive).Like common cameras, a hyperspectral camera is composed of an array of sensors that are sensitive to a certain range of the electromagnetic spectrum, generally the range that comprises the Near Infrared or NIR. Then, each pixel reacts differently to the frequencies it receives.That is, if in a pixel of our cellphone the light is broken down into three RGB levels (Red, Green, and Blue), in the case of hyperspectral, a pixel is represented by&nbsp;hundreds&nbsp;of components each corresponding to a different wavelength in that band of the spectrum.<h2>Know What An Object Is Made Of Without Touching It</h2>Well, we already know a little more about how the sensor works, but what is the physical phenomenon that this camera tries to represent?It’s like this: When any object in nature is exposed to a source of photons (or light) they react at an atomic level to that source, absorbing, returning or dispersing part of that energy.Taking advantange of this, a hyperspectral camera notices this change in the object when being exposed to light or energy source, and here is the magic. A stone has a completely different reaction to that of a tree leaf, that is, both return different things, or in technical language, they have a different hyperspectral signature, in this way we can know how a material is composed without touching it and only illuminating it (at least, superficially).The main requirement for proper operation is to illuminate the object of study with enough energy, so a satellite can only capture hyperspectral images during the day, unless it has a mega light bulb.Finally, it is interesting from an academic and industrial point of view to extract said information for its interpretation and improve decision-making.At Odd Industries we use hyperspectral images because they are extremely rich in information and have innumerable applications for understanding the value of the natural world.

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Seeing The Invisible: The Basics of Hyperspectral Imaging

Are we wasting resources on "blind" conservation efforts? The disconnection between science and practical management in conservation and the reluctance of some conservation managers to apply expertise from their own and other projects has led to an alarming lack of evidence-based practices, causing ineffective resource allocation and hindering progress toward biodiversity targets. Let's explore how this issue has manifested and what can be done to resolve it.With the term "blind" conservation I refer to the lack of verifiable, evidence-based conservation efforts, the lack of learning from other projects' expertise and the implementation gap between academic research in conservation biology and its application in conservation planning and management.

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