Multi-scale camouflage

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The Canadian Forces were the first army to issue pixellated digital multi-scale camouflage for all units with their disruptively patterned CADPAT, issued in 2002, shown here in its 'Temperate Woodland' variant. CADPAT digital camouflage pattern (Temperate Woodland variant).jpg
The Canadian Forces were the first army to issue pixellated digital multi-scale camouflage for all units with their disruptively patterned CADPAT, issued in 2002, shown here in its 'Temperate Woodland' variant.

Multi-scale camouflage is a type of military camouflage combining patterns at two or more scales, often (though not necessarily) with a digital camouflage pattern created with computer assistance. The function is to provide camouflage over a range of distances, or equivalently over a range of scales (scale-invariant camouflage), in the manner of fractals, so some approaches are called fractal camouflage. Not all multiscale patterns are composed of rectangular pixels, even if they were designed using a computer. Further, not all pixellated patterns work at different scales, so being pixellated or digital does not of itself guarantee improved performance.

Contents

The first standardized pattern to be issued was the single-scale Italian telo mimetico . The root of the modern multi-scale camouflage patterns can be traced back to 1930s experiments in Europe for the German and Soviet armies. This was followed by the Canadian development of the Canadian Disruptive Pattern (CADPAT), first issued in 2002, and then with US work which created the Marine pattern (MARPAT), launched between 2002 and 2004.

Principle

The Universal Camouflage Pattern provided insufficient contrast to disrupt a soldier's outline effectively, appearing at a moderate distance as a single colour. Army Combat Uniform.jpg
The Universal Camouflage Pattern provided insufficient contrast to disrupt a soldier's outline effectively, appearing at a moderate distance as a single colour.

Scale invariance

The scale of camouflage patterns is related to their function. Large structures need larger patterns than individual soldiers to disrupt their shape. At the same time, large patterns are more effective from afar, while small scale patterns work better up close. [1] Traditional single scale patterns work well in their optimal range from the observer, but an observer at other distances will not see the pattern optimally. Nature itself is very often fractal, where plants and rock formations exhibit similar patterns across several magnitudes of scale. The idea behind multi-scale patterns is both to mimic the self-similarity of nature, and also to offer scale invariant or so-called fractal camouflage. [2] [3]

Animals such as the flounder have the ability to adapt their camouflage patterns to suit the background, and they do so extremely effectively, [4] selecting patterns that match the spatial scales of the current background. [4]

Design trade-offs

Operational Camouflage Pattern, a disruptive but non-pixellated pattern, replaced the Universal Camouflage Pattern beginning in 2015. Scorpion W2, Operational Camouflage Pattern (OCP) swatch.png
Operational Camouflage Pattern, a disruptive but non-pixellated pattern, replaced the Universal Camouflage Pattern beginning in 2015.

A pattern being called digital most often means that it is visibly composed of computer-generated pixels. [5] The term is sometimes also used of computer generated patterns like the non-pixellated MultiCam and the Italian fractal Vegetato pattern. [6] Neither pixellation nor digitization contributes to the camouflaging effect. The pixellated style, however, simplifies design and eases printing on fabric, compared to traditional patterns. While digital patterns are becoming widespread, critics maintain that the pixellated look is a question of fashion rather than function. [7]

The design process involves trading-off different factors, including colour, contrast, and overall disruptive effect. A failure to consider all elements of pattern design tends to result in poor results. The US Army's Universal Camouflage Pattern (UCP), for example, adopted after limited testing in 2003 and 2004, performed poorly because of low pattern contrast (isoluminance—beyond very close range, the design looks like a field of solid light grey, failing to disrupt an object's outlines) and arbitrary colour selection, neither of which could be saved by quantizing (digitizing) the pattern geometry. [8] [9] The design was replaced from 2015 with the Operational Camouflage Pattern, a non-pixellated pattern. [10] [11]

History

Italian Telo mimetico, first used in 1929 Wartime Italian M1929.jpg
Italian Telo mimetico , first used in 1929

Interwar development in Europe

The idea of patterned camouflage extends back to the interwar period in Europe. The first printed camouflage pattern was the 1929 Italian telo mimetico , which used irregular areas of three colours at a single scale. [12]

German WWII experiments

Waffen-SS 1944 Erbsenmuster (pea-dot pattern) combines large and small scale patterns. Waffen-SS Camouflage.jpg
Waffen-SS 1944 Erbsenmuster (pea-dot pattern) combines large and small scale patterns.

During the Second World War, Johann Georg Otto Schick [lower-alpha 1] designed a series of patterns such as Platanenmuster (plane tree pattern) and Erbsenmuster (pea-dot pattern) for the Waffen-SS, combining micro- and macro-patterns in one scheme. [13] [14]

The German Army developed the idea further in the 1970s into Flecktarn, which combines smaller shapes with dithering; this softens the edges of the large scale pattern, making the underlying objects harder to discern.

Soviet WWII experiments

Pixel-like shapes pre-date computer-aided design by many years, already being used in Soviet Union experiments with camouflage patterns, such as "TTsMKK" [lower-alpha 2] developed in 1944 or 1945. The pattern uses areas of olive green, sand, and black running together in broken patches at a range of scales.

1976 research by Timothy O'Neill

In 1976, Timothy O'Neill created a pixellated pattern named "Dual-Tex". He called the digital approach "texture match". The initial work was done by hand on a retired M113 armoured personnel carrier; O'Neill painted the pattern on with a 2-inch (5.1 cm) roller, forming squares of colour by hand. Field testing showed that the result was good compared to the U. S. Army's existing camouflage patterns, and O'Neill went on to become an instructor and camouflage researcher at West Point military academy. [16] [17]

2000s fractal-like digital patterns

Patterns in nature, like the foliage of this Buxus sempervirens bush, are often broken into visual elements with small and large scales, such as branches and leaves. Buxus sempervirens foliage 1.jpg
Patterns in nature, like the foliage of this Buxus sempervirens bush, are often broken into visual elements with small and large scales, such as branches and leaves.

By 2000, development was underway to create pixellated camouflage patterns for combat uniforms like the Canadian Forces' CADPAT, which was developed in 1997 and later issued in 2002, and then the US Marines' MARPAT, rolled out between 2002 and 2004. The CADPAT and MARPAT patterns were somewhat self-similar (in the manner of fractals and patterns in nature such as vegetation), designed to work at two different scales. A genuinely fractal pattern would be statistically similar at all scales. A target camouflaged with MARPAT takes about 2.5 times longer to detect than older NATO camouflage which worked at only one scale, while recognition, which begins after detection, took 20 percent longer than with older camouflage. [18] [19] [20]

Fractal-like patterns work because the human visual system efficiently discriminates images that have different fractal dimension or other second-order statistics like Fourier spatial amplitude spectra; objects simply appear to pop out from the background. [18] Timothy O'Neill helped the Marine Corps to develop first a digital pattern for vehicles, then fabric for uniforms, which had two colour schemes, one designed for woodland, one for desert. [9]

Notes

  1. Schick (1882–) was a professor in Munich in the 1930s, and from 1935 director of the newly formed camouflage department (named "T" for "Tarnung", camouflage).
  2. TTsMKK (Russian: ТЦМКК) is short for "three-colour disguise camouflage suit" ("трёхцветный маскировочный камуфлированный костюм", tryokhtsvetniy maskirovochniy kamuflirovanniy kostyum). [15]

Related Research Articles

<span class="mw-page-title-main">Camouflage</span> Concealment in plain sight by any means, e.g. colour, pattern and shape

Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's wings. A third approach, motion dazzle, confuses the observer with a conspicuous pattern, making the object visible but momentarily harder to locate, as well as making general aiming easier. The majority of camouflage methods aim for crypsis, often through a general resemblance to the background, high contrast disruptive coloration, eliminating shadow, and countershading. In the open ocean, where there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chameleons and octopuses, are capable of actively changing their skin pattern and colours, whether for camouflage or for signalling. It is possible that some plants use camouflage to evade being eaten by herbivores.

<i>Flecktarn</i> German military camouflage pattern

Flecktarn is a family of three-, four-, five- or six-color disruptive camouflage patterns, the most common being the five-color pattern, consisting of dark green, grey-green, red brown, and black over a light green or tan base depending on the manufacturer. The original German five-color pattern was designed for use in European temperate woodland terrain. A three-color variation called Tropentarn is intended for arid and desert conditions; the German Bundeswehr wore it in Afghanistan.

<span class="mw-page-title-main">MARPAT</span> US Marine Corps camouflage pattern

MARPAT is a multi-scale camouflage pattern in use with the United States Marine Corps, designed in 2001 and introduced from late 2002 to early 2005 with the Marine Corps Combat Utility Uniform (MCCUU), which replaced the Camouflage Utility Uniform. Its design and concept are based on the Canadian CADPAT pattern. The pattern is formed of small rectangular pixels of color. In theory, it is a far more effective camouflage than standard uniform patterns because it mimics the dappled textures and rough boundaries found in natural settings. It is also known as the "digital pattern" or "digi-cammies" because of its micropattern (pixels) rather than the old macropattern.

<span class="mw-page-title-main">Battle Dress Uniform</span> Fatigues used by the US Armed Forces from early 1980s to mid-2000s

The Battle Dress Uniform (BDU) is a camouflaged combat uniform that was used by the United States Armed Forces as their standard combat uniform from the early 1980s to the mid-2000s. Since then, it has been replaced or supplanted in every branch of the U.S. Armed Forces.

<span class="mw-page-title-main">Combat uniform</span> Military uniform

A combat uniform, also called field uniform, battledress or military fatigues, is a casual type of uniform used by military, police, fire and other public uniformed services for everyday fieldwork and combat duty purposes, as opposed to dress uniforms worn in functions and parades. It generally consists of a jacket, trousers and shirt or T-shirt, all cut to be looser and more comfortable than more formal uniforms. Design may depend on regiment or service branch, e.g. army, navy, air force, marines, etc. In the army branches, fabrics tend to come in camouflage, disruptive pattern or else green, brown or khaki monochrome, in order to approximate the background and make the soldier less visible in nature. In Western dress codes, field uniform is considered equivalent to civilian casual wear. As such, field uniform is considered less formal than service dress uniform, generally aimed at office or staff use, as well as mess dress uniform, and full dress uniform.

<span class="mw-page-title-main">Disruptive Pattern Material</span> Camouflage pattern used in British and some Commonwealth militaries

Disruptive Pattern Material (DPM) is the commonly used name of a camouflage pattern used by the British Armed Forces as well as many other armed forces worldwide, particularly in former British colonies.

<span class="mw-page-title-main">Military camouflage</span> Camouflage used to protect from enemy observation

Military camouflage is the use of camouflage by an armed force to protect personnel and equipment from observation by enemy forces. In practice, this means applying colour and materials to military equipment of all kinds, including vehicles, ships, aircraft, gun positions and battledress, either to conceal it from observation (crypsis), or to make it appear as something else (mimicry). The French slang word camouflage came into common English usage during World War I when the concept of visual deception developed into an essential part of modern military tactics. In that war, long-range artillery and observation from the air combined to expand the field of fire, and camouflage was widely used to decrease the danger of being targeted or to enable surprise. As such, military camouflage is a form of military deception in addition to cultural functions such as political identification.

<span class="mw-page-title-main">Disruptive Pattern Camouflage Uniform</span> Five-colour military camouflage pattern

Disruptive Pattern Camouflage Uniform (DPCU), also nicknamed Auscam, jelly bean camo, or hearts and bunnies is a five-colour military camouflage pattern used by the Australian Defence Force. Replacing the jungle greens used from WWII, it was developed and tested during the late 1970s and early 1980s. The uniform was trialled in 1987, with it being slowly introduced in late 1989, with the last production and discontinuation of the jungle greens being in late 1990. Jungle greens were last issued in late 1991 for Australian Regular Army, and late 1994 for Australian Army Reserve.

<span class="mw-page-title-main">MultiCam</span> Camouflage pattern

MultiCam is a camouflage pattern designed for use in a wide range of environments and conditions which was specifically developed and is produced by American company Crye Precision. As a result of the pattern's effectiveness across disparate environments and regions, it has found extensive adoption globally. Variants of it, some unlicensed, are in use with armed forces worldwide, particularly with special operations units.

<span class="mw-page-title-main">Marine Corps Combat Utility Uniform</span> Uniform

The Marine Corps Combat Utility Uniform (MCCUU) is the current battledress uniform of the United States Marine Corps. It is also worn by Navy personnel assigned to Marine Corps units.

<span class="mw-page-title-main">Helmet cover</span> Tactical coverings used by on combat helmets

The helmet cover was first used by French soldiers during World War I.

<span class="mw-page-title-main">Universal Camouflage Pattern</span> United States Army military camouflage pattern

The Universal Camouflage Pattern (UCP) is a digital military camouflage pattern formerly used by the United States Army in their Army Combat Uniform. Technicians at Natick Soldier Systems Center attempted to devise a uniform pattern that would mask the wearer in all seasonal environments. Laboratory and field tests from 2003 to 2004 showed a pattern named "All-Over-Brush" to provide the best concealment of the patterns tested. All-Over-Brush was selected as the winner over ten other patterns. The disadvantage of an all-in-one pattern is that it is a combination of what is effective in many different environments and is less effective in a particular environment when compared to a specialized coloration designed specifically for that environment. The winning All-Over-Brush pattern was not used as the final UCP. Instead, U.S. Army leadership utilized pixellated images taken from Canadian CADPAT and US Marine Corps MARPAT, then recolored them based on three universal colors developed in the Army's 2002-2004 tests, to be called the UCP. While the pixelated pattern of the UCP is similar to the MARPAT and CADPAT camouflage patterns used by the United States Marine Corps and the Canadian Armed Forces, its coloration differs significantly. The final UCP was then adopted without field testing against other patterns.

<span class="mw-page-title-main">U.S. Woodland</span> 1980s military camouflage pattern

The U.S. Woodland is a camouflage pattern that was used as the default camouflage pattern issued to the United States Armed Forces from 1981, with the issue of the Battle Dress Uniform, until its replacement in the mid to late 2000s. It is a four color, high contrast disruptive pattern with irregular markings in green, brown, sand and black. It is also known unofficially by its colloquial moniker of "M81" after the Battle Dress Uniform it was first used on, though this term was not officially used by the U.S. military.

<span class="mw-page-title-main">CADPAT</span> Computer-generated digital camouflage pattern used by the Canadian Armed Forces

Canadian Disruptive Pattern is the computer-generated digital camouflage pattern developed for use by the Canadian Armed Forces. Four operational variations of CADPAT have been used by the Canadian Armed Forces: a temperate woodland pattern, an arid regions pattern, a winter operations pattern, and a multi-terrain pattern.

<span class="mw-page-title-main">Disruptive coloration</span> Camouflage to break up an objects outlines

Disruptive coloration is a form of camouflage that works by breaking up the outlines of an animal, soldier or military vehicle with a strongly contrasting pattern. It is often combined with other methods of crypsis including background colour matching and countershading; special cases are coincident disruptive coloration and the disruptive eye mask seen in some fishes, amphibians, and reptiles. It appears paradoxical as a way of not being seen, since disruption of outlines depends on high contrast, so the patches of colour are themselves conspicuous.

<span class="mw-page-title-main">Operational Camouflage Pattern</span> United States military camouflage pattern

Operational Camouflage Pattern (OCP), originally codenamed Scorpion W2, is a military camouflage pattern adopted in 2015 by the United States Army for use as the U.S. Army's main camouflage pattern on the Army Combat Uniform (ACU). This pattern officially replaced the U.S. Army's previous Universal Camouflage Pattern (UCP) as the official combat uniform pattern for most U.S. soldiers at the end of September 2019. The pattern also superseded the closely related MultiCam, a pattern previously used for troops deploying to Afghanistan.

<span class="mw-page-title-main">Australian Multicam Camouflage Uniform</span>

The Australian Multicam Camouflage Uniform (AMCU) is the combat uniform camouflage pattern for the Australian Defence Force, general issued from 2014 onwards. The AMCU is replacing the previously used Disruptive Pattern Camouflage Uniform (DPCU) and Australian Multicam Pattern - Operational Combat Uniform (AMP-OCU) camouflage patterns.

<span class="mw-page-title-main">German World War II camouflage patterns</span> Military camouflage designs

German World War II camouflage patterns formed a family of disruptively patterned military camouflage designs for clothing, used and in the main designed during the Second World War. The first pattern, Splittertarnmuster, was designed in 1931 and was initially intended for Zeltbahn shelter halves. The clothing patterns developed from it combined a pattern of interlocking irregular green, brown, and buff polygons with vertical "rain" streaks. Later patterns, all said to have been designed for the Waffen-SS by Johann Georg Otto Schick, evolved into more leaf-like forms with rounded dots or irregular shapes. Camouflage smocks were designed to be reversible, providing camouflage for two seasons, whether summer and autumn, or summer and winter (snow). Distribution was limited to the Waffen-SS, ostensibly because of a patent, though variants were used by other units, including the Luftwaffe. Production was limited by shortage of materials, especially of high quality waterproof cotton duck.

<span class="mw-page-title-main">Timothy O'Neill (camoufleur)</span>

Timothy R. O'Neill is an American U.S. Army officer, professor and camouflage expert, responsible for designing the digital camouflage pattern MARPAT. He has been called "father of digital camouflage". O'Neill is the author of two works of fiction. In 1979 he published The Individuated Hobbit: Jung, Tolkien, and the Archetypes of Middle-Earth.

The Navy Working Uniform (NWU) is a series of military uniforms that are currently used by the United States Navy for wear by its members. The NWU is a "working" uniform, which means that it is made to a more durable and utilitarian standard, thus being worn in lieu of more formal uniforms that might get unduly damaged or dirtied in the process of normal military duties.

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