Polynomial relation between mean shoot area and mean shoot weight for vigour calculation on cv. Touriga Nacional

OENO One ◽  
2012 ◽  
Vol 46 (4) ◽  
pp. 275
Author(s):  
Paula Cristina Oliveira ◽  
Joao Paulo Moura ◽  
Maria José Correia ◽  
Luis Filipe Sanches Fernandes ◽  
Ana Alexandra Oliveira
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Digital Photography ◽  
Reliable Estimate ◽  
Binary Images ◽  
Rgb Images ◽  
The Mean ◽  
Shoot Weight ◽  
Number Of Shoots

<p style="text-align: justify;"><strong>Aim</strong>: To develop a new methodology for determining vine vigour based on a polynomial relation between mean shoot area and mean shoot weight.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Thirty grapevines (cv. Touriga Nacional) characterized by low, medium and high vigour were selected for a threeyear study. Vine vigour was determined each year by using the traditional “mean shoot weight” methodology. At the same time, the mean shoot area of each vine was determined by using digital image processing, where RGB images (Red Green Blue) were converted to HSV images (Hue Saturation Value) and then to binary images based on the saturation values with a threshold set to 0.15. Finally, we established a polynomial relation between mean shoot area and mean shoot weight, given by the equation <em>f(x)</em> = 0.0047<em>x</em><sup>2</sup> + 0.2254<em>x</em> + 0.0474, where <em>f(x)</em> corresponds to the mean shoot weight (vine vigour estimation) and <em>x</em> corresponds to the mean shoot area.</p><p style="text-align: justify;"><strong>Conclusions</strong>: The proposed method for calculating vine vigour based on a digital image of a vine and a polynomial relation between mean shoot area and mean shoot weight provides a highly reliable estimate of the actual vigour. Correlation for the 30 grapevines with three-year average of 99.8%.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: With this new methodology, it is unnecessary to determine the pruning weight and the number of shoots per plant in the vineyard. Its implementation is simple, based on a digital photography of the vine under study, and independent of the plot pruning date.</p>

scholarly journals Radiopacity of Methacrylate and Silorane Composite Resins Using a Digital Radiographic System

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Leily Macedo Firoozmand ◽  
Mariana Gonçalves Cordeiro ◽  
Marcos André dos Santos Da Silva ◽  
Rudys Rodolfo De Jesus Tavarez ◽  
Etevaldo Matos Maia Filho
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Equivalent Width ◽  
Composite Resins ◽  
Digital Method ◽  
Human Tooth ◽  
Resin Composites ◽  
Mean Values ◽  
The Mean

The aim of this study was to evaluate the radiopacity of silorane and methacrylate resin composites, comparing them to the enamel, dentin, and aluminum penetrometer using a digital image. From six resin composites (Filtek™P90, Filtek Z350, Filtek Z350 XT flow, Tetric Ceram, TPH Spectrum, and SureFil SDR flow) cylindrical disks (5 × 1 mm) were made and radiographed by a digital method, together with a 15-step aluminum step-wedge and a 1 mm slice of human tooth. The degree of radiopacity of each image was quantified using digital image processing. The mean values of the shades of gray of the tested materials were measured and the equivalent width of aluminum was calculated for each resin. The results of our work yielded the following radiopacity values, given here in descending order: Tetric Ceram > TPH > SDR > Z350 > Z350 flow > P90 > enamel > dentin. The radiopacity of the materials was different both for the enamel and for the dentin, except for resin P90, which was no different than enamel. In conclusion, silorane-based resin exhibited a radiopacity higher than dentin and closest to the enamel; a large portion of the methacrylate-based flow and conventional resins demonstrated greater radiopacity in comparison to dentin and enamel.

An Overview of Digital Image Processing and Recognition (Invited Paper)

1982 ◽  
Vol 40 ◽  
pp. 700-702
Author(s):  
R. C. Gonzalez
Keyword(s):  
Image Processing ◽  
New York ◽  
Digital Image Processing ◽  
Digital Image ◽  
Practical Implementation ◽  
Submarine Cable ◽  
Vigorous Growth ◽  
Digitized Pictures ◽  
Processing Techniques ◽  
And Storage

Interest in digital image processing techniques dates back to the early 1920's, when digitized pictures of world news events were first transmitted by submarine cable between New York and London. Applications of digital image processing concepts, however, did not become widespread until the middle 1960's, when third-generation digital computers began to offer the speed and storage capabilities required for practical implementation of image processing algorithms. Since then, this area has experienced vigorous growth, having been a subject of interdisciplinary research in fields ranging from engineering and computer science to biology, chemistry, and medicine.

A method to measure pores and fissures in geologic materials under S.E.M. by digital image processing

1978 ◽  
Vol 36 (1) ◽  
pp. 212-213
Author(s):  
L. Montoto ◽  
M. Montoto ◽  
A. Bel-Lan
Keyword(s):  
Image Processing ◽  
Optical Microscopy ◽  
Digital Image Processing ◽  
Digital Image ◽  
Digital Processing ◽  
Free Surfaces ◽  
Geologic Materials ◽  
Automatic Information ◽  
Detector Output ◽  
Rock Specimens

INTRODUCTION.- The physical properties of rock masses are greatly influenced by their internal discontinuities, like pores and fissures. So, these need to be measured as a basis for interpretation. To avoid the basic difficulties of measurement under optical microscopy and analogic image systems, the authors use S.E.M. and multiband digital image processing. In S.E.M., analog signal processing has been used to further image enhancement (1), but automatic information extraction can be achieved by simple digital processing of S.E.M. images (2). The use of multiband image would overcome difficulties such as artifacts introduced by the relative positions of sample and detector or the typicals encountered in optical microscopy.DIGITAL IMAGE PROCESSING.- The studied rock specimens were in the form of flat deformation-free surfaces observed under a Phillips SEM model 500. The SEM detector output signal was recorded in picture form in b&w negatives and digitized using a Perkin Elmer 1010 MP flat microdensitometer.

Digital image processing methods applied to the study of annealing time on semiconductor-metal eutectic composites

1988 ◽  
Vol 46 ◽  
pp. 848-849
Author(s):  
J. Hefter
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Electronic Device ◽  
Processing System ◽  
Average Diameter ◽  
Eutectic Solidification ◽  
Metal Silicide ◽  
The Matrix ◽  
Microscopic Studies

Semiconductor-metal composites, formed by the eutectic solidification of silicon and a metal silicide have been under investigation for some time for a number of electronic device applications. This composite system is comprised of a silicon matrix containing extended metal-silicide rod-shaped structures aligned in parallel throughout the material. The average diameter of such a rod in a typical system is about 1 μm. Thus, characterization of the rod morphology by electron microscope methods is necessitated.The types of morphometric information that may be obtained from such microscopic studies coupled with image processing are (i) the area fraction of rods in the matrix, (ii) the average rod diameter, (iii) an average circularity (roundness), and (iv) the number density (Nd;rods/cm2). To acquire electron images of these materials, a digital image processing system (Tracor Northern 5500/5600) attached to a JEOL JXA-840 analytical SEM has been used.

Complementary Z-Contrast Imaging and Digital Image Processing

1985 ◽  
Vol 43 ◽  
pp. 304-305
Author(s):  
K. N. Colonna ◽  
G. Oliphant
Keyword(s):  
Image Processing ◽  
Heavy Metal ◽  
Digital Image Processing ◽  
Digital Image ◽  
Biological Tissue ◽  
Biological Imaging ◽  
Tissue Preparation ◽  
Contrast Imaging ◽  
Imaging Tool ◽  
Z Contrast

Harmonious use of Z-contrast imaging and digital image processing as an analytical imaging tool was developed and demonstrated in studying the elemental constitution of human and maturing rabbit spermatozoa. Due to its analog origin (Fig. 1), the Z-contrast image offers information unique to the science of biological imaging. Despite the information and distinct advantages it offers, the potential of Z-contrast imaging is extremely limited without the application of techniques of digital image processing. For the first time in biological imaging, this study demonstrates the tremendous potential involved in the complementary use of Z-contrast imaging and digital image processing.Imaging in the Z-contrast mode is powerful for three distinct reasons, the first of which involves tissue preparation. It affords biologists the opportunity to visualize biological tissue without the use of heavy metal fixatives and stains. For years biologists have used heavy metal components to compensate for the limited electron scattering properties of biological tissue.

Development of New Image Registration Techniques – A Research Framework

2018 ◽  
Vol 8 (3) ◽  
pp. 50
Author(s):  
Sindhu Madhuri G. ◽  
Indira Gandhi M P
Keyword(s):  
Image Processing ◽  
Image Registration ◽  
Digital Image Processing ◽  
Digital Image ◽  
Creative Thinking ◽  
Reference Image ◽  
Transformation Technique ◽  
Research Framework ◽  
Registration Process ◽  
Data Source

Image is a basic and fundamental data source for the digital image processing. This image data source is required to be processed into information or intelligence and further to knowledge levels where it is required to understand and migrate into knowledge economy systems. Image registration is one of such key and most important process already identified in the digital image processing domain. Image registration is a process of bringing the reference image and sensed image into a common co-ordinate system, and application of complex transformation techniques for necessary comparison of reference with sensed images obtained from different - views, times, spaces, etc., in order to extract the valuable information and intelligence embedded in them. Due to the complexity of overall image registration process, it is difficult to suggest a single transformation technique even for a specific application. In addition, it is highly impossible to suggest one single transformation technique for comparison of various sensed images with a reference image during the image registration process. This research gap calls for the development of new image registration techniques for the application of more than one transformation technique during the image registration process for the necessary comparisons with reference image & sensed images, those are obtained from the available heterogeneous sources or sensors, based on the requirement. In addition, it is a basic need to attempt for the measurement of effectiveness of the image registration process also. Therefore, a research framework is developed for image registration process and attempted for the measurement of its effectiveness also. This new research area is a novel idea, and is expected to emerge as a provision for the knowledge computations with creative thinking through the embedded intelligence extraction during the complex image registration process.

DAYA TARIK DAN DAYA DORONG PERKEMBANGAN WILAYAH TERHADAP PERSEBARAN PEMANFAATAN LAHAN KOTA SINJAI KABUPATEN SINJAI

2019 ◽  
Vol 3 ◽  
pp. 377
Author(s):  
Didiet Haryadi Hakim ◽  
Roland A. Barkey ◽  
Ria Wikantari
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Pull Factors ◽  
Push Factor

Bertambahnya penduduk akan selalu diikuti oleh bertambahnya bangunan-bangunan permukiman maupun bukan permukiman di wilayah Kota Kabupaten Sinjai sehingga mengakibatkan adanya persebaran pemanfaatan lahan yang tidak terarah. Penelitian ini bertujuan untuk (1) Menganalisis persebaran pemanfaatan lahan Perkotaan Sinjai (2) Mengidentifikasi faktor yang menarik dan mendorong terjadinya migrasi penduduk Perkotaan Sinjai dan (3) Mengusulkan arahan pemanfaatan lahan Perkotaan Sinjai. Metode yang digunakan dalam penelitian ini adalah deskriptif kuantitatif. Pengumpulan data dilakukan dengan metode analisis pembobotan sesuai dengan hasil kuisioner dan mengakses data dari instansi terkait. Data diolah menggunakan alat analisis pengelolaan citra digital (Digital Image Processing) yaitu teknik analisis (manipulasi dan interpretasi) data digital dengan bantuan komputer. Hasil penelitian menunjukkan kondisi perkembangan Kota Kabupaten Sinjai dipengaruhi oleh aspek perkembangan permukiman, perdagangan, pendidikan dan kesehatan, Faktor Pendorong (push factor) terjadinya urbanisasi di Kota Kabupaten Sinjai adalah keterbatasan lapangan kerja, rendahnya pendapatan di daerah asal, keamanan, sarana kesehatan yang tidak lengkap dan pelayanan pendidikan yang tidak sesuai harapan. Faktor penarik (pull factors) terjadinya urbanisasi adalah faktor ekonomi yaitu tingginya pendapatan apabila bekerja di Kota Kabupaten Sinjai, tersedianya sarana pendidikan dan sarana kesehatan yang lengkap, dan faktor aksesibilitas yaitu transportasi yang murah dan mudah, kemudian mengetahui arahan pemanfaatan lahan Kota Sinjai.

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