This paper presents a new methodology to detect leather defects, based on the wavelet transform. The methodology uses a bank of optimised filters, where each filter is tuned to one defect type. Filter shape and wavelet sub-band are selected based the maximisation of the ratio between features values on defect regions and on normal regions. The proposed methodology can detect defects even when s...

In this research samples from solid wastes coming out from various process steps during manufacturing of garment sheep skins, shoe upper goat skins, shoe upper hides and sole leathers have been collected. These samples have been classified among themselves and their characteristics have been determined by various chemical analysis. By characterization of solid wastes which state problems for th...

A recent proposal that leatherworkers might face a reproductive hazard was tested using data from a large survey in Montreal of occupational factors in pregnancy. The outcome ofpregnancy in almost 400 women employed in the manufacture of leather products, some 6000 employed in other types of manufacture, and nearly 50 000 employed but not in manufacture were compared. There was little differenc...

the aim followed in the present paper was to evaluate the slaughter body and carcass weights as well as the characteristics of hide and leather in dromedaries (one-hump) and in the crossbred (c. bactrianus×c. droedarius) camels. fourteen camels from each sex (female and male) representing two genotypes at 21 months of age were utilized. slaughter weight, hot and cold carcass weights, dressing-o...

Archaeological studies have shown that hides and skins have been used since antiquity as clothes, vessels, bedding, and possibly structurally in ancient dwelling places. At present, leather is used in various applications. Hides and skins, raw materials for the tanning industry, are renewable and easily perishable resources (Arugna, 1995). Their production is dependent on the rearing, managemen...

The performance of Support Vector Machines, as many other machine learning algorithms, is very sensitive to parameter tuning, mainly in real world problems. In this paper, two well known and widely used SVM implementations, Weka SMO and LIBSVM, were compared using Simulated Annealing as a parameter tuner. This approach increased significantly the classification accuracy over the Weka SMO and LI...

Corresponding author: Małgorzata MOŚCIPAN – Ph.D., e-mail: [email protected] textiles Information on the earliest textiles date back to Neolithic period (about 5000 BC) and theirs examples, mainly in the form of ancient people relicts have been found in Africa and Peru. However, the form of textiles at that time differed form that contemporary one. At the beginning grasses, creepers, branc...

Toxic odour causes pollution to environment. Removal of odour from wet processing sections of leather tanneries is important to preserve safety and occupational health. Such odour causing gases are identified in nature and are identified mostly as ammonia, Hydrogen sulfide and Volatile organic compounds. These gases, evolving from tanning drums, were experimentally quantified and analysed. Tech...

the study was consequently investigated effect of different tanning methods on apparent density, thickness, tensile strength and also extension percentage in three different tanning (chromic, alum and vegetable) of grown part of ostrich skins (n = 15; 12 to 14 months). average apparent density and thickness of leathers were 0.7 ± 0.0gr/cm2 and 1.7 ± 0.1 mm, respectively. the breaking load, tens...