To remove random valued impulse noise from colour images, an efficient impulse detection and filtering scheme is presented. The locally adaptive threshold for impulse detection is derived from the pixels of the filtering window. The restoration of the noisy pixel is done on the basis of brightness and chromaticity information obtained from the neighbouring pixels in the filtering window. Experi...

Except for a few observations by von Frisch (1911), Dijkgraaf (1949), and Wichers (cited by Healey, 1957), no work has been done on the central nervous control of colour change, anterior to the medulla oblongata. Von Frisch performed a series of experiments in which he stimulated various parts of the minnow brain. After negative results from the cerebellum and the optic tectum he concluded that...

This study measures the influence of pH and polyaluminium chloride (PAC) dosage on the effectiveness of reactive dyes removal. Experiments were carried out for turquoise DG, red DB-8, orange OGR and black DN. The pH was changed from 3.5 to 7.0 and the dosages of PAC from 0.3 to 4.0 mg Al/mg dye. The degree of dyes removal depended on pH and dosage of coagulant. In the pH range from 4.0 to 5.5 t...

Background subtraction in dynamic scenes is an important and challenging task. This paper proposes an efficient motion detection system based on background subtraction using fuzzy colour histogram and morphological processing. Here two methods are used effectively for object detection followed by people counting and compare these performance based on accurate estimation. In dynamic texture scen...

A total of 1540 bacterial isolates were isolated and screened for their ability to degrade selected azo dyes. Of these, nine isolates were chosen for further studies based on their ability to degrade a wide spectrum of dyes efficiently and rapidly. Several microbial consortia were developed and tested for their effectiveness. Overall the consortia were able to degrade 70 100% colour within 72 h...

Background subtraction in dynamic scenes is an important and challenging task. This paper proposes an efficient motion detection system based on background subtraction using fuzzy colour histogram and morphological processing. Here two methods are used effectively for object detection followed by people counting and compare these performance based on accurate estimation. In dynamic texture scen...

This work studied the combination of a chemical coagulation/flocculation step with an aerobic biological process, using feed-batch operation, to treat real paint manufacturing wastewater (PMW). The results indicate that the combination of coagulation flocculation and biological process is an efficient alternative in the treatment of PMW. For initials COD of 18590 mg/L, BOD of 1492 mg/L and colo...

Sausages, produced with/without nitrite and nitrate, were fermented at 21°C (RH: 65-74%) or 8°C (RH: 75-85%). All sausages were dried until a final weight loss of 44% and analyzed for physicochemical and microbiological data. The removal of NO2 /NO3 caused an increase in lipid oxidation, although the decrease in the fermentation temperature proved to be effective in controlling the lipid oxidat...