Navigation Links
Oranges and mandarins are inspected using artificial vision
Date:10/11/2011

Scientists at the Valencian Institute of Agrarian Research (IVIA, Spain) have created a machine that detects and separates rotten oranges, another that classifies mandarin segments according to their quality and another that helps citrus fruit pickers out in the field. All prototypes use computer vision to automatically inspect the fruits.

Until now, rotten oranges have been detected manually in dark rooms with the help of ultraviolet light that illuminates the essential oils in damaged rind through fluorescence. The job is carried out in strictly timed shifts due to the risk that this type of light poses. However, a team of researchers from Valencia have just created a machine that can carry out the task automatically.

Jos Blasco, researcher at the IVIA and a member of the team that patented the machine explains that "through collaboration with a company within this sector, we have developed software and hardware that can locate rotten citrus fruits and discard of those that are not fit for sale."

This creation is just one of the many agricultural applications developed by these scientists in the last 20 years thanks to advances in artificial vision, a series of techniques that allow for a computer to be programmed so that it "understands" the image it has in front of it and can act accordingly. The results have been published in the Food and Bioprocess Technology journal.

Another of the machines -in the presence of visible light- classifies citrus fruits on the production line according to their quality, colouring and the type of damage that the skin presents. In this way, first class fruits that are destined for more demanding markets can be separated from second class fruits that are perfectly edible despite having some small defect like being bruised or scratched. The analysis is carried out at a speed of 15 to 20 pieces of fruit per second.

Researchers have also developed a device that automates the inspection of ready-to-eat mandarin segments. After being individually separated on a vibrating platform, they are transported on a conveyor belt to the inspection area which is able to examine 28 segments per second. At this stage, the broken segments are separated from the whole segments and the same goes for those with or without pips. Skin and any other foreign bodies are also identified and eliminated from the production line.

Blasco outlines that "as well as developing property statistical and computing techniques, the prototypes use the highest image resolution that modern equipment can achieve. They are capable of analysing objects in regions of the electromagnetic spectrum that the human eye cannot see such as ultraviolet and infrared."

Medical techniques for analysing fruit

"We have even started to inspect the internal quality of fruit using magnetic imaging resonance (MRI), computerized axial tomography (CAT) or X-rays, like those that are used in medicine," he adds. "Although at the moment, these are costly techniques and we must continue in our investigations so as to facilitate their installation and make them more efficient in the fruit selection process."

One of the latest investigations focuses on the use of hyperspectral imaging, which collects and processes information from a large part of the electromagnetic spectrum and provides individual spectral measurements for each pixel. This method can be applied as a way of identifying chemical compounds whose concentrations can change as the fruit ripens or rots. Therefore, it is possible to predict the perfect time to eat the fruit or, indeed, to track the evolution of a disease in the fruit.

The most sizeable of IVIA's projects is a machine that helps during the picking of citrus fruits and it is the size of a large tractor. Blasco highlights that it is a self-propelled prototype capable of classifying oranges whilst still out in the field. As a result, he states that "it is very important that the inspection system is highly efficient from an energy consumption point of view."

Operators pick the fruits and place them on the machine's mobile belt. Quality, colour and the presence of external damage is determined using sensors and a vision system.

The information gathered by the sensors is then transmitted to an automated logic controller in order for the fruit to be classified into the three established categories. Upon arrival at the warehouse, the fruit has already been preclassified and comes with complete statistics on its quality. This allows for it to be valued and its immediate destination can be decided upon.


'/>"/>

Contact: SINC
info@agenciasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Related biology news :

1. Carnegie Mellon developing automated systems to enable precision farming of apples, oranges
2. Could chocolate and oranges help prevent frailty in old age?
3. Tango mandarins to appear this month in produce aisles
4. 10 most wanted plants inspected for clues to climate change
5. NJIT professor finds engineering technique to identify disease-causing genes
6. Research shows that the pill does not deserve its reputation for causing weight gain
7. Planetary "first family" discovered by astronomers using Gemini and Keck Observatories
8. Planetary first family discovered by astronomers using Gemini and Keck Observatories
9. Using water to understand human society, from the industrial revolution to global trade
10. ESA satellites focusing on the Arctic
11. Using the other guys toolkit: Similarities of pumping blood, oil examined
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Oranges and mandarins are inspected using artificial vision
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
(Date:4/5/2017)... -- KEY FINDINGS The global market for ... of 25.76% during the forecast period of 2017-2025. The ... the growth of the stem cell market. ... INSIGHTS The global stem cell market is segmented on ... stem cell market of the product is segmented into ...
(Date:4/3/2017)... , April 3, 2017  Data ... precision engineering platform, detected a statistically significant ... product prior to treatment and objective response ... the potential to predict whether cancer patients ... to treatment, as well as to improve ...
Breaking Biology News(10 mins):
(Date:6/22/2017)... PA (PRWEB) , ... June 22, 2017 , ... ... and superior results to clients throughout the biopharma and life sciences industries, continue ... the industry is seeing. Tunnell’s Kip Wolf will be speaking on “The State ...
(Date:6/22/2017)... ... June 22, 2017 , ... Charm Sciences, Inc. is pleased ... test was determined to be appropriate as a screening test at dairies and farms ... Charm EZ system, and the Charm EZ Lite system. These systems are a combination ...
(Date:6/20/2017)... ... June 20, 2017 , ... ... the adulterants which pose the most likely threat to their products at the ... year. , IFT's annual food expo attracts over 20,000 attendees representing food ...
(Date:6/20/2017)... ... June 20, 2017 , ... Do More with OHAUS , ... being a trusted supplier in the weighing industry, to extending its expertise across the ... enzyme reactions, immunoassays, hybridizations and more, allowing for its customers to 'Do ...
Breaking Biology Technology: