The spatiochromatic properties of the red-green dimension of human colour vision appear to be optimized for picking fruit in leaves at about arms' reach. However, other evidence suggests that the task of spotting fruit from a distance might be more important. This discrepancy may arise because the task a system (e.g. human trichromacy) is best at is not necessarily the same task where the large...

Machine vision technology has dramatically improved the efficiency, speed, and quality of fruit-picking robots in complex environments. Target recognition for fruit is an integral part systems picking robots. The traditional digital image processing a method based on hand-designed features, which makes it difficult to achieve better as results dealing with changing orchard environment. Numerous...

cumin (cuminum cyminum) is an annual suitable for the dry and semi-dry areas of iran. recently, farmers have chosen to plant cumin because it requires less water and growth time. however, at harvest time, the resistance of cumin seed to shatter is low and, if careful attention is not paid to this fact, a major portion of the crop can be lost. when the connection force of the seed decreases, see...

For the automated robotic picking of bunch-type fruit, strategy is to roughly determine location bunches, plan route from a remote location, and then locate point precisely at more appropriate, closer location. The latter can reduce amount information be processed obtain precise detailed features, thus improving accuracy vision system. In this study, long-close distance coordination control for...

the investigations were carried out in 2007 on the fruit of 7 native early-ripening apple cultivars grown in karaj climatic conditions, harvested in two phenological stages of maturity and ripenning. the harvested samples were stored at (0 ± 0.5) c and (85 ± 5) % of humidity. the measured sensorial traits consisted in: aroma, flavor, sweetness, flesh quality and general acceptability achieved ...

When early-season avocado fruit (Persea americana Mill. cv Hass) were treated with ethylene or propylene for 24 hours immediately on picking, the time to the onset of the respiratory climacteric, i.e. the lag period, remained unchanged compared with that in untreated fruit. When fruit were pulsed 24 hours after picking, on the other hand, the lag period was shortened. In both cases, however, a ...

To solve the problem that robot often collides with obstacles such as branches around fruit during picking due to its inability adapt growing environment, this paper proposes an apple-picking path planning algorithm based on improved PSO. The main contents of are: firstly, and surrounding are extracted from 3D point cloud data, direction is calculated; then surface used establish spatial model ...

Industry requires automatic fruit picking due to increasing labour costs and human variability in picking skill. This requires motion of a manipulator in unmapped dynamic environments that has hyper-redundancy to find its way successfully through leaves and branches. This paper uses a modular arm technique to generate kinematic redundancy in constructing and controlling a fruit picking arm that...