What is Colour Sensing

What is Colour Sensing?

Sensing – whether that be texture, colour or form – is technology that emulates our human senses.

Our human sense of perception – or looking at objects – works by the eye gathering data from an object and sending this data to the mind. Once the mind identifies the data, it evaluates it and we then make a decision based on what our mind tells us about the data.

This process takes mere seconds and the decision that we make, can also be described in more technical terms, as a result.

Perception is somewhat subjective. What we perceive can be influenced by various things such as lighting for example. How something appears under a light indoors, differs from how we may perceive that same object outdoors in the blazing sun.

For example, a perfectly fresh and healthy orange may look quite sickly under the influence of blue light which we would find indoors. In a split second our mind will make the decision as to whether we are looking at a good orange under bad conditions, or a bad orange under good conditions. Either way, this result based on our human perception, may not actually be correct at all.

In 1672, Sir Isaac Newton (1642-1726) published a series of experiments which demonstrated that he was the first person to understand the rainbow. He achieved this understanding by refracting white light with a prism, which split that light into its component colours being the familiar red, orange, yellow, green, blue and violet.

Most importantly, Newton discovered that each colour could be linked to very specific wavelengths which enabled the conversion of perception to a very accurate mathematical description.

Very soon, scientists realised that there are wavelengths that go beyond natural light, such as Ultra Violet and Infra Red light. These are not ‘visible’ to the human eye, but they do emulate our sensing, such as Infra Red light which is able to calculate temperature.

Zooming to the present, if we can emulate the +- 14 conditions that describe an observation and name the result with an accurate mathematical equation, we will find ourselves in a position where we can predict, formulate, replicate and evaluate colour with absolute accuracy and certainty.

Numerous applications have derived from this natural phenomenon, summed up as follows:

  • When light strikes an object, the light changes;
  • If the light change is diagnostic of a property (like a colour), it is both reproducible and measurable;
  • We are able to emulate human sensing through specialised technology that features a non-invasive and reliable method which in seconds, is able to interrogate objects and their properties and provide us with true and reliable results.