I have used a red colour cloth, but the colour is of your own choice. If the background contains that colour then the invisibility effect won’t be seen (pun intended) fully. Generate the final augmented output to create a magical effect.Ĭhoose a cloth of one colour only and suppose the colour of the cloth is red then ensure that your background does not contain any red colour. Segment out the red coloured cloth by generating a mask.Ĥ. Detect the red( I used red) coloured cloth using colour detection and segmentation algorithm.ģ. Capture and store the background frame from the camera video.Ģ. We’ll be using an image processing technique called Color detection and segmentation.ġ. The problem statement is to try to be invisible like how Harry Potter used his family heirloom to become invisible.
#Invisible cloak code#
We just need a camera, a laptop and very few lines of Python code using Open Source Computer Vision, and of course, the cloth-acting-as-the-cloak itself.
And yes, it’s absolutely possible through the brilliance of Machine Learning. Or, as Smith jokingly said of chemists, ’We are your competition!’Ĭloaks that make objects invisible will be made within 18 months, say UK and US scientists.What if I told you that you can actually have a replica of that invisibility cloak using every day cloth material? Yes, you don’t need Demiguise hair like you do in the wizarding world, just any coloured cloth will do. Pendry said, ’We knew that no naturally occurring materials would do the job, but the new class of metamaterials, which owe their properties to their internal structure rather than their chemistry, have proved yet again that they can meet some of the most extreme challenges.’ ’When the phase fronts meet the material, they are swept smoothly around it due to the spatial distribution of the properties of the cloak.’ ’The cloak’s material properties vary from point to point and vary in a very specific way,’ David Smith, one of the Duke researchers, told Chemistry World. The effect is achieved because of a subtle gradient in the electromagnetic properties of the cloak.
#Invisible cloak series#
The invisibility cloak: a series of concentric fibreglass rings imprinted with U-shaped copper elementsĪs microwave radiation, of wavelength around 3 cm, strikes the cloak, the beams are diverted around the object and meet up at the other side - similar to the way that water flows around a boulder in a river. The target object - a copper cylinder - sits in the centre of the innermost ring. The dimensions of these copper elements vary slightly on each successive concentric ring. The ’invisibility cloak’ consists of a series of concentric rings of a fibreglass-based composite upon which have been imprinted numerous U-shaped copper elements of millimetre dimensions in a precise geometric formation. Pendry had earlier provided the theory to create a system that would make an object invisible to microwaves. The latest device has been designed by researchers from Duke University in North Carolina, US, together with John Pendry at Imperial College London, UK.
When these components - small metal elements, for example - are significantly smaller than the wavelength of the impinging electromagnetic radiation, the metamaterial can be given electromagnetic properties that would be otherwise impossible to achieve. In metamaterials the desired properties are achieved by the precise geometrical arrangement of the components of the structure. Engineering these properties into a material has traditionally been the preserve of the chemist by subtle manipulation of atoms and molecules. Metamaterials are artificial structures that have unique electromagnetic properties. The latest structure composed of a metamaterial is a remarkable cloaking device that can render an object invisible to microwave radiation - in two dimensions at least. Chemists beware - the metamaterialists are making startling progress.
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