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| Registros recuperados: 13 | |
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| Troadec, Herve. |
| A method to assist the reading of calcified structures with digital images is proposed. An a priori growth pattern is introduced in the image processing to take into account both the variability of the ring size and the non-linearity of their growth. The introduction of biological knowledge is performed within a demodulation processing using the reciprocal growth function. The ring number is estimated by spectral analysis. The constraints introduced by the growth model are weak since they are restricted to the definition of L0, in the case of an exponential model, or of L∞ in the case of a Von Bertalanffy model. When applied to larval Dover sole otoliths (Solea solea) results close to the expert's are obtained. In the case of saithe otoliths (Pollachius... |
| Tipo: Text |
Palavras-chave: Otolithe; Image numérique; Âge; Croissance; Solea solea / Pollachius virens; Otolith; Digital image; Age; Growth; Solea solea / Pollachius virens. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00189/30072/28560.pdf |
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| Bassoi,Luis Henrique; Hopmans,Jan W.; Jorge,Lúcio André de Castro; Alencar,Cristina Miranda de; Silva,José Antonio Moura e. |
| Grape (Vitis vinifera L.) yield and its quality are dependent of the status of the root system. Root distribution information is also valuable for soil and water management. An analysis of methods to evaluate the root distribution of grapevines for both, drip and microsprinkler irrigation in a Typic Acrustox is presented for the table grape cv. Italia grafted on the rootstock IAC-313, in northeastern Brazil. Measured root parameters using the monolith method were root dry weight (Dw) and root length density (Lv), while root area (Ap) was estimated using the soil profile method in combination with digital image analysis. For both irrigation systems, roots were present to the 1 m soil depth and extended laterally to 1 m distance from the trunk, but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L.; Root system; Digital image. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200024 |
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| OLIVEIRA,THIAGO DE PAULA; ZOCCHI,SILVIO SANDOVAL; JACOMINO,ANGELO PEDRO. |
| ABSTRACT Color hue is a variable frequently used postharvest to assess the physiological maturity of various fruits. In general, mean color hue is quantified by visual techniques, but this method, based on human grading, is tedious and may be erroneous. The color of fruit peel is frequently determined at four points randomly distributed on the equatorial region of a fruit, but this practice can lead to biased results because these points represent the equatorial region only and not the total area of the fruit peel. Consequently, this bias is not due to equipment measurement errors, but to the bias in the sampling process of the points on the fruit epidermis. An alternative to such methods is the digital image which provides information about all regions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Postharvest; Hue color; Circular data; Digital image; Colorimeter. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200304 |
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| Watanabe,Plauto Christopher Aranha; Issa,João Paulo Mardegan; Oliveira,Tatiane Martín de; Monteiro,Solange Aparecida Caldeira; Iyomasa,Mamie Mizusaki; Regalo,Simone Cecilio Hallak; Siéssere,Selma. |
| The aim of this study was to correlate the morphodigital characteristics of the trabecular mandibular bone, in this way, it is possible to observe osteoporosis clue in patients of both sex, using panoramic radiograph for analysis. The results of this study showed statistical difference between men and women considering the bone trabecular measures (p<0.05), but it was not found statistical difference between the sides in each analyzed group (p>0.05). Male group presented a more strongly trabecular and complex bone than the female group, this finding is important index to osteoporotic risk, being possible to affirm that the male bone is less probable to suffer a osteoporotic fracture |
| Tipo: Journal article |
Palavras-chave: Mandible; Bone; Digital image; Radiograph. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400031 |
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| CARVALHO JUNIOR, O. A. de; CARDOSO, F. B. da F.; MARTINS, E. de S.; JUNQUEIRA, F. de F.; CARVALHO, A. P. F. de; REATTO, A.; GUIMARAES, R. F.. |
| RESUMO: Este trabalho apresenta uma abordagem metodológica para obter o índice de vazios de solo (e) utilizando técnicas de processamento de imagens. Como esse método permite uma obtenção automática, o procedimento pode ser considerado mais fácil, mais rápido e mais preciso que técnicas convencionais. A metodologia está baseada na classificação supervisionada de áreas de vazios presentes em seções delgadas de solo. A metodologia pode ser resumida nos passos seguintes: (a) elaboração de seção delgada da amostra de solo (se a porosidade do solo tiver um padrão anisotrópico, várias lâminas devem ser confeccionadas seguindo o eixo de comprimento preferencial; (b) são fotografadas as seções delgadas e gravadas em formato digital em RGB; (c) a imagem colorida é... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Imagem digital; Digital image; Chemicophysical properties.; Cerrado; Propriedade Físico-Química; Porosidade; Sensoriamento Remoto; Solo.; Remote sensing; Porosity; Soil.. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567773 |
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| FERREIRA, M. E.; ANDRADE, L. R. M. de; SANO, E. E.; CARVALHO, A. M. de; JUNQUEIRA, N. T. V.. |
| RESUMO: Existem vários métodos para avaliar o crescimento da vegetação e a taxa de cobertura do solo. Medidas precisas e rápidas podem ser obtidas do tratamento digital de imagens geradas de câmeras fotográficas ou de vídeo. Há disponível, no mercado, diversos processadores de imagens que apresentam funções básicas semelhantes, mas com certas particularidades que poderão trazer maior benefício para o usuário, dependendo da aplicação. O SPRING, desenvolvido pelo INPE, é de domínio público, sendo mais abrangente do que um processador de imagens, incluindo funções de geoprocessamento. O ENVI foi desenvolvido para a análise de imagens multiespectrais e hiperespectrais, podendo também ser utilizado para o processamento de imagens obtidas de câmeras de vídeo,... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Imagem digital; Digital image; Plant cover; Geoprocessamento e Sensoriamento remoto: Outros.; Cerrado; Cobertura do Solo; Sensoriamento Remoto.; Remote sensing.. |
| Ano: 2001 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567065 |
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| 口田, 圭吾; 長谷川, 未央; 鈴木, 三義; 三好, 俊三; KUCHIDA, Keigo; HASEGAWA, Mio; SUZUKI, Mitsuyoshi; MIYOSHI, Shunzo. |
| デジタルカメラと照明装置とを一体化した枝肉横断面撮影装置（以下，撮 影装置）を，より多くの枝肉に適用可能とするよう改良し，得られた画像を利用し て，牛肉色基準（BCS）ナンバーを推定することを目的とした．撮影装置は，リング 照明方式を採用し，装置の高さを従来型より12cm低い33cmとした．内部には，1,002 個の白色発光ダイオードが配置され，均一で安定した光を枝肉横断面に照射可能であ る．BCS標準模型について撮影装置からの画像より得られた赤（R），緑（G），青 （B）各階調値および輝度とBCSナンバーとの相関係数は，それぞれ-0.98，-0.91， -0.82および-0.99であり，BCSナンバーと輝度との関係がもっとも直線的であっ た．北海道内の食肉処理場において，第6-7肋骨横断面の画像を採取し（n＝ 1,208），変数逐次増減法による重回帰分析を行い，BCSナンバーを画像解析形質から 推定した．推定されたBCSナンバーと格付員によるそれとが一致した割合は76.8%，そ れが±1以内であった割合は，100.0%となった． The photographing equipment integrating the digital camera and the illumination device for the cross section of carcass was able to take a clear image. The first aim of this study was to improve the photographing equipment in order to adapt for more carcasses. The second aim was to predict... |
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Palavras-chave: Beef Color Standard; Image analysis; Digital image. |
| Ano: 2001 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/949 |
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| Registros recuperados: 13 | |
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