3D scanning technology can tell how clean Indian cities are

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3D scanning technology can tell how clean Indian cities are
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The new method is cost-effective and could readily be used by municipal bodies across the country to estimate the waste collection efficiency at neighbourhood level, say experts
At any given point, the national capital has about 5.57 lakh tonnes of Municipal Solid

Waste

(MSW) illegally dumped on the roadside or in open plots.
The estimate has been arrived at by using a new method that deploys 3D sensor scanning technology to quantify the mass of illegally-dumped MSW, combined with the “urban transect” sampling technique.
For scanning of waste dumped on roadside, researchers used USB-powered hand-held scanners based on very short-range scanning technology.
“Since we were using these scanners for the first time for measuring municipal solid waste, we validated the 3D sensors before deploying into the field.
The study estimated the amount of illegally-dumped MSW on the roadside or in open plots in four neighbourhoods with different economic status for estimating annual municipal waste collection efficiency.
As per official estimates, the annual average waste collection efficiency in the city is 83 per cent, meaning this much MSW is collected and transported to landfills.
But the study has found that the collection efficiency differs from locality to locality and is linked with economic status.
The difference is due to better waste management infrastructure including door-to-door waste collection, waste collection centres and municipal street sweepers in higher income colonies.
On the other hand, poor localities only depend on municipal street sweepers and trucks for collecting the waste and, there is no door-to-door waste collection.
Any waste that was dumped in open areas and plots other than the community dump or dhalao was considered illegal in the study.
“It is true that illegally-dumped waste also makes its way to the landfill, wherever there is public outcry

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