GLCM-based chi-square histogram distance for automatic detection of defects on patterned textures

Chi-square histogram distance is one of the distance measures that can be used to find dissimilarity between two histograms. Motivated by the fact that texture discrimination by human vision system is based on second-order statistics, we make use of histogram of gray-level co-occurrence matrix (GLCM) that is based on second-order statistics and propose a new machine vision algorithm for automatic defect detection on patterned textures. Input defective images are split into several periodic blocks and GLCMs are computed after quantizing the gray levels from 0-255 to 0-63 to keep the size of GLCM compact and to reduce computation time. Dissimilarity matrix derived from chi-square distances of the GLCMs is subjected to hierarchical clustering to automatically identify defective and defect-free blocks. Effectiveness of the proposed method is demonstrated through experiments on defective real-fabric images of 2 major wallpaper groups (pmm and p4m groups).Comment: IJCVR, Vol. 2, No. 4, 2011, pp. 302-31

हालोथूरियनों का जैवप्रौद्योगिकी महत्व

कृपया पूरा लेखा पढ

Unusual colour pattern among Holothuria scabra

Holothuria scabra commonly called sand fish, is one of the most commercially important and widely distributed holothurian species, chiefly distributed along Gulf of Mannar, Palk Bay and Andaman and Nicobar Islands along the Indian coast and is considered to be an ideal candidate for natural stock restoration programme

बेश द मेर और जीविकार्जन

कृपया पूरा लेख पढे

Reproductive aspects, larval and Juvenile rearing of Holothuria (Theelothuria) spinifera Theel

As in many Indo-Pacific countries, sea cucumbers form an important part of a mullispedes fishery in India. Beche-de-mer exported from India during the period 1992-2000, varied from 10.5 to 140 tonnes (t) and ranked first among the dried marine products. The beche-de-mer industry mainly depends on two spedes of Holothuria: H. scabra and H. spinifera. Beche-de-mer exports have declined from 70 t in 19%-1997 to 3.8 t in 2001. Due to overexploitation, the Ministry of Environment, Government of India, has banned both the fishing and export of sea cucumbers since June 2001

केंद्रीय समुद्री मात्स्यिकी अनुसंधान संस्थान का टुटिकोरिन अनुसंधान केंद्र

केंद्रीय समुद्री मात्स्यिकी अनुसंधान संस्थान का टुटिकोरिन अनुसंधान केंद्

Effect of feed concentrations on larval growth, survival and development of Holothuria ( Theelothuria) spinifera Thee1

The results of the study to standardize the larval feeding regime, for the mass production of sea cucumber juveniles through hatchery system are presented.' Auricularia larvae after 48 hours of fertilization obtained from the induced spawning of Holothuria spinifera were used for the experiment to ascertain the effect of feed concentration on larval quality, growth, survival and development. The flagellate Isochrysis galbana at O,1,2,4,and 8 x 04cells/ml were provided as the feed for a period of ten days. The growth rate of the larvae was more or less similar in 1 x lo4 and 2 x lo4 cells/ml. However the percentage of survival, rate of stomach growth, percentage of late auricularia developed and the occurrence of normal symmetrical shape indicated that 2 x 104cells/ml as the optimum larval feed concentration for the species

भारत में समुद्री संवर्धन एवं पुन: संभरण के लिए समुद्री ककड़ियों का स्फुटनशाला उत्पादन

Hatchery production of sea cucumber juveniles for restocking and mariculture in Indi

Association of a commensal fish Carapus sp with Holothuria spinifera

Pearl fish belonging to the family Carapidae is generally found living inside different invertebrate hosts like holothurians, sea starsand bivalves. The fishes under the genus,Carapusare commensals and often use their hosts as shelters. They are found in the respiratory tree or inside the body cavity of different holothurians