Biopesticides, vectors for the development of bioeconomy, represent a realistic alternative to petroleum-based chemical pesticides and their known harmfulness humans environment. Bacillus thuringiensis is gram-positive, spore-forming bacterium used production biocontrol agents in agriculture. This insecticidal activity mainly due parasporal δ-endotoxins consisting an assembly crystalline protei...

This paper presents a multiscale method to detect neovascularization in the optic disc (NVD) using fundus images. Our method is applied to a manually selected region of interest (ROI) containing the optic disc. All the vessels in the ROI are segmented by adaptively combining contrast enhancement methods with a vessel segmentation technique. Textural features extracted using multiscale amplitude...

This paper introduces a multiple competitive learning neural network fusion method for pattern recognition. By defining a confidence level measure for the learning vector quantization network classifier, we develop both a serial and a parallel network fusion algorithm to combine the discriminatory ability of different individually trained networks. We use two distinct feature vectors, gray-scal...

Optical granulometry systems like WipFrag are required to measure fragments in situ. That is to say, the fragments are in piles where sorting takes place, where fragments are partially overlapped, and where fines may not be seen because they fall in and behind the coarser fragments, or where the fines are simply too small to be seen. As a result, optical systems tend typically to overestimate t...