Search results for "texture"
showing 10 items of 402 documents
Instrumental evaluation of the texture of cv. Nocellara del Belice table olives
2015
The Nocellara del Belice (Olea europaea L.) is the most important double-aptitude olive variety in western Sicily (Italy), it is one of the most important domestic varieties both for the production and the marketed quantities. Nowadays there is a lack of studies on its mechanical properties through instrumental analysis able to provide quantitative measurements of its flesh texture which is a very important quality attribute for the consumer. The aim of this study is to evaluate the texture of Nocellara del Belice table olives, packed in glass jars, through a mechanical system allowing us to continuously measure and record the compression force along the profile of the flesh of the fruit. F…
Multi-feature Counting of Dense Crowd Image Based on Multi-column Convolutional Neural Network
2020
The crowd counting task is an important research problem. Now more and more people are concerned about safety issues. When the population density reaches a very high peak, the population density counts, the alarm is sent out, and the crowds are diverted. The trampling of the Shanghai New Year’s stampede will not happen again. The final density map is produced by two steps: at first, extract feature maps from multiple layers, and then adjust their output so that they are all the same size, all these resized layers are combined into the final density map. We also used texture features and target edge detection to reduce the loss of density map detail to better integrate with our convolutional…
Binding of Na+ ions to proteins: Effect on taste perception
2015
Abstract This study investigated the relationship between the ionic binding of sodium and salty perception in protein matrices. Protein type (i.e. gelatin, milk protein and soy protein), protein concentration and pH were varied to obtain matrices with distinct compositions and rheological properties. 23Na NMR spectroscopy was used to determine the ratio of sodium ions bound to proteins and the mobility of sodium ions. The results showed that protein type, concentration and pH affected the rheological properties of the protein matrices, the ionic binding of sodium ions and taste intensity. As the protein concentration increased, the mobility of sodium ions decreased and the ratio of bound so…
Reducing salt and fat while maintaining taste: An approach on a model food system
2013
Unbalanced diets with an excess consumption of fat, salt and low‐size sugars contribute to the development of pathologies such as obesity, cardiovascular diseases, and diabetes. As a consequence, worldwide healthcare authorities advocate salt, fat and sugar reduction in food. However, the multifunctional roles of these ingredients in both food composition and perception prevent a simple reduction of their content. Several strategies are currently investigated to design healthier food while maintaining its taste and consumer acceptability. Among these strategies, the one relying on crossmodal sensory compensation is tested within the framework of the EU‐TeRiFiQ research project. The main obj…
Different sensory aspects of a food are not remembered with equal acuity
2009
International audience; In the present study, food memory for three sensory aspects involved in food perception, taste, texture and aroma, is compared. Participants received a lunch including a custard dessert (target) under incidental learning condition. One day later, participants were presented with samples identical to the target and with distractors varying either in sweetness, thickness or cherry aroma. Memory was assessed by an absolute recognition question (“Did you eat this sample yesterday?”) and by relative questions (“Is this sample less, equal or more sweet than the sample you ate yesterday?”). Results showed better memory performance for sweetness than for the two other sensor…
Texte, texture, textile. Variations sur le tissage dans la musique, les arts plastiques et la littérature
2013
International audience
Cost-driven framework for progressive compression of textured meshes
2019
International audience; Recent advances in digitization of geometry and radiometry generate in routine massive amounts of surface meshes with texture or color attributes. This large amount of data can be compressed using a progressive approach which provides at decoding low complexity levels of details (LoDs) that are continuously refined until retrieving the original model. The goal of such a progressive mesh compression algorithm is to improve the overall quality of the transmission for the user, by optimizing the rate-distortion trade-off. In this paper, we introduce a novel meaningful measure for the cost of a progressive transmission of a textured mesh by observing that the rate-distor…
Development of an Automatic Pollen Classification System Using Shape, Texture and Aperture Features
2015
International audience; Automatic detection and classification of pollen species has value for use inside of palynologic allergen studies. Traditional labeling of different pollen species requires an expert biologist to classify particles by sight, and is therefore time-consuming and expensive. Here, an automatic process is developed which segments the particle contour and uses the extracted features for the classification process. We consider shape features, texture features and aperture features and analyze which are useful. The texture features analyzed include: Gabor Filters, Fast Fourier Transform, Local Binary Patterns, Histogram of Oriented Gradients, and Haralick features. We have s…
Copy-move Forgery Detection via Texture Description
2010
Copy-move forgery is one of the most common type of tampering in digital images. Copy-moves are parts of the image that are copied and pasted onto another part of the same image. Detection methods in general use block-matching methods, which first divide the image into overlapping blocks and then extract features from each block, assuming similar blocks will yield similar features. In this paper we present a block-based approach which exploits texture as feature to be extracted from blocks. Our goal is to study if texture is well suited for the specific application, and to compare performance of several texture descriptors. Tests have been made on both uncompressed and JPEG compressed image…
New techniques for visualization of losses due to image compression in grayscale medical still images
2003
To evaluate the visual influence of irreversible compression on medical images, changes of the images have to be visualized. The authors have explored alternative techniques to be used instead of the usual side-by-side comparison, where the information contained in both images is perceived in a single image, preserving the context between compression errors and image structures. Thus fast and easy comparison can be done. These techniques make use of the human ability to perceive information also in the dimensions of color, space, and time. A study was performed with JPEG-compressed coronary angiographic images. Changes in the resulting images for six compression factors from 7 to 30 were sc…