2,317 research outputs found

    Image segmentation using a neural network

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    An object extraction problem based on the Gibbs Random Field model is discussed. The Maximum a'posteriori probability (MAP) estimate of a scene based on a noise-corrupted realization is found to be computationally exponential in nature. A neural network, which is a modified version of that of Hopfield, is suggested for solving the problem. A single neuron is assigned to every pixel. Each neuron is supposed to be connected only to all of its nearest neighbours. The energy function of the network is designed in such a way that its minimum value corresponds to the MAP estimate of the scene. The dynamics of the network are described. A possible hardware realization of a neuron is also suggested. The technique is implemented on a set of noisy images and found to be highly robust and immune to noise

    Effect of Basin Versus Drip Irrigation on Quality Production in Mosambi Sweet Orange

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    An investigation was undertaken to find out the effect of basin and drip irrigation on growth, production, fruit quality, foliar N, P, K values and soil moisture status in Mosambi sweet orange grown in laterite soil. Treatments included drip irrigation at 0.6, 0.8 and 1.0 Epan with and without black polythene mulching, basin irrigation @ 30 liter/plant at 18 days interval + black polythene mulching and control (No watering + black polythene mulching). The plants receiving irrigation at 0.8 Epan + polythene mulching resulted 136 fruits per plant with superior in fruit quality in terms of highest TSS (11.2°B), sugar (8.5%) and vitamin C (47.8 mg/100ml) content. Maximum fruit weight of 166 g and diameter of 7.0 cm were recorded in the fruits of the plants which received irrigation at 1.0 Epan + polythene mulching. Foliar nitrogen content was highest (2.65%) in plants with drip irrigation at 0.8 Epan + polythene mulching while phosphorus and potassium content were non-significant among the treatments. Irrigation (drip or basin) of the plants during dry months resulted lower shoot drying as compared to no irrigation
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