Aplicação de moire de projeção com deslocamento de fase na geração de modelos digitais topograficos de orgão vegetais / Applications of projection moire technique with phase shifiting to agricultural engineering problems

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Shape definition of bodies exhibiting symmetric, non symmetric or irregular geometry is of fundamental necessity for science and technology developments. Applications of objects shape survey is reflected on several science fields as biology, human prosthesis and orthesis, medical diagnosis, prediction of surgical results, orthopedics, veterinary medicine, industrial quality control, reverse engineering, mathematical modeling, solid mechanics, composites, structural design and inspection, machine elements, static and dynamic problems, machine vision and robotics. This research work devotes special attention to agricultural engineering problems as the shape definition of animal as well as vegetable agricultural products, design of farm machinery elements, plant architecture, plant and soil - machine mechanical interactions, soil - tire contact area determination, products selection and sorting, soil and vegetable mechanical properties determination, soil tillage and agricultural practices studies, product packing design and so forth. Amongst the shape survey methods exhibited by the pertinent literature, the moiré methods are here considered feasible, of low cost, of easy application and speedy. Projection moiré with phase shifting technique has been selected to be considered a developed procedure when compared with remaining moiré methods, presenting also recent developments. This research work includes a variety of practical examples on several agricultural engineering subjects. Shape determination of symmetric bodies, determination of mechanical injuries proportions on agricultural products and three dimensional coordinates model are presented as well. Employed softwares included ImageJ, RisingSun Moiré, SCILAB/SIP, Excell and routines. The conclusions refer to the feasibility of the proposed method to the agricultural engineering science

ASSUNTO(S)

moire techniques metodo de moire produtos agricolas - classificação agricultural products selection and sorting

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