8 research outputs found
ImageCLEF 2020: Multimedia Retrieval in Lifelogging, Medical, Nature, and Security Applications
This paper presents an overview of the 2020 ImageCLEF lab that will be organized as part of the Conference and Labs of the Evaluation Forum - CLEF Labs 2020 in Thessaloniki, Greece. ImageCLEF is an ongoing evaluation initiative (run since 2003) that promotes the evaluation of technologies for annotation, indexing and retrieval of visual data with the aim of providing information access to large collections of images in various usage scenarios and domains. In 2020, the 18th edition of ImageCLEF will organize four main tasks: (i) a Lifelog task (videos, images and other sources) about daily activity understanding, retrieval and summarization, (ii) a Medical task that groups three previous tasks (caption analysis, tuberculosis prediction, and medical visual question answering) with new data and adapted tasks, (iii) a Coral task about segmenting and labeling collections of coral images for 3D modeling, and a new (iv) Web user interface task addressing the problems of detecting and recognizing hand drawn website UIs (User Interfaces) for generating automatic code. The strong participation, with over 235 research groups registering and 63 submitting over 359 runs for the tasks in 2019 shows an important interest in this benchmarking campaign. We expect the new tasks to attract at least as many researchers for 2020
Overview of the ImageCLEF 2021: Multimedia Retrieval in Medical, Nature, Internet and Social Media Applications
This paper presents an overview of the ImageCLEF 2021 lab that was organized as part of the Conference and Labs of the Evaluation Forum â CLEF Labs 2021. ImageCLEF is an ongoing evaluation initiative (first run in 2003) that promotes the evaluation of technologies for annotation, indexing and retrieval of visual data with the aim of providing information access to large collections of images in various usage scenarios and domains. In 2021, the 19th edition of ImageCLEF runs four main tasks: (i) a medical task that groups three previous tasks, i.e., caption analysis, tuberculosis prediction, and medical visual question answering and question generation, (ii) a nature coral task about segmenting and labeling collections of coral reef images, (iii) an Internet task addressing the problems of identifying hand-drawn and digital user interface components, and (iv) a new social media aware task on estimating potential real-life effects of online image sharing. Despite the current pandemic situation, the benchmark campaign received a strong participation with over 38 groups submitting more than 250 runs
The 2021 ImageCLEF Benchmark: Multimedia Retrieval in Medical, Nature, Internet and Social Media Applications
This paper presents the ideas for the 2021 ImageCLEF lab that will be organized as part of the Conference and Labs of the Evaluation Forum â CLEF Labs 2021 in Bucharest, Romania. ImageCLEF is an ongoing evaluation initiative (active since 2003) that promotes the evaluation of technologies for annotation, indexing and retrieval of visual data with the aim of providing information access to large collections of images in various usage scenarios and domains. In 2021, the 19th edition of ImageCLEF will organize four main tasks: (i) a Medical task addressing visual question answering, a concept annotation and a tuberculosis classification task, (ii) a Coral task addressing the annotation and localisation of substrates in coral reef images, (iii) a DrawnUI task addressing the creation of websites from either a drawing or a screenshot by detecting the different elements present on the design and a new (iv) Aware task addressing the prediction of real-life consequences of online photo sharing. The strong participation in 2020, despite the COVID
pandemic, with over 115 research groups registering and 40 submitting
over 295 runs for the tasks shows an important interest in this benchmarking campaign. We expect the new tasks to attract at least as many researchers for 2021
Proof-of-principle of rTLC, an open-source software developed for image evaluation and multivariate analysis of planar chromatograms
High-performance thin-layer chromatography (HPTLC) is an advantageous analytical technique for analysis of complex samples. Combined with multivariate data analysis, it turns out to be a powerful tool for profiling of many samples in parallel. So far, chromatogram analysis has been time-consuming and required the application of at least two software packages to convert HPTLC chromatograms into a numerical data matrix. Hence, this study aimed to develop a powerful, all in one open-source software for user-friendly image processing and multivariate analysis of HPTLC chromatograms. Using the caret package for machine learning, the software was set up in the R programming language with an HTMLâuser interface created by the shiny package. The newly developed software, called rTLC, is deployed online, and instructions for direct use as a web application and for local installation, if required, are available on GitHub. rTLC was created especially for routine use in planar chromatography. It provides the necessary tools to guide the user in a fast protocol to the statistical data output (e.g., data extraction, preprocessing techniques, variable selection, and data analysis). rTLC offers a standardized procedure and informative visualization tools that allow the user to explore the data in a reproducible and comprehensive way. As proof-of-principle of rTLC, German propolis samples were analyzed using pattern recognition techniques, principal component analysis, hierarchic cluster analysis, and predictive techniques, such as random forest and support vector machines. © 2016 American Chemical Society.Peer-reviewed manuscript: [http://cherry.chem.bg.ac.rs/handle/123456789/3601
Open-Source-Based 3D Printing of Thin Silica Gel Layers in Planar Chromatography
On the basis of open-source
packages, 3D printing of thin silica
gel layers is demonstrated as proof-of-principle for use in planar
chromatography. A slurry doser was designed to replace the plastic
extruder of an open-source Prusa i3 printer. The optimal parameters
for 3D printing of layers were studied, and the planar chromatographic
separations on these printed layers were successfully demonstrated
with a mixture of dyes. The layer printing process was fast. For printing
a 0.2 mm layer on a 10 cm Ă 10 cm format, it took less than 5
min. It was affordable, i.e., the running costs for producing such
a plate were less than 0.25 Euro and the investment costs for the
modified hardware were 630 Euro. This approach demonstrated not only
the potential of the 3D printing environment in planar chromatography
but also opened new avenues and new perspectives for tailor-made plates,
not only with regard to layer materials and their combinations (gradient
plates) but also with regard to different layer shapes and patterns.
As such an example, separations on a printed plane layer were compared
with those obtained from a printed channeled layer. For the latter,
40 channels were printed in parallel on a 10 cm Ă 10 cm format
for the separation of 40 samples. For producing such a channeled plate,
the running costs were below 0.04 Euro and the printing process took
only 2 min. All modifications of the device and software were released
open-source to encourage reuse and improvements and to stimulate the
users to contribute to this technology. By this proof-of-principle,
another asset was demonstrated to be integrated into the Office Chromatography
concept, in which all relevant steps for online miniaturized planar
chromatography are performed by a single device
Powerful Artificial Neural Network for Planar Chromatographic Image Evaluation, Shown for Denoising and Feature Extraction
An
artificial neural network (ANN) is presented as a new and superior
technique for processing planar chromatography images. Though several
algorithms are available for image processing in planar chromatography,
the use of ANN has not been explored so far. It simulates how the
human brain interprets images, and the intrinsic features of the image
were captured on patches of pixels and successfully reconstructed
afterward. The obtained high number of observations was a perfect
basis for using ANN. As examples, three quite different data sets
were processed with this new algorithm to demonstrate its versatility
and benefits. Powerful features, which the ANN learned from the image
data set, improved the quality of the analytical data. Thus, noise
or inhomogeneous background of bioautograms was removed as demonstrated
for salvia extracts, improving their bioquantifications. On colorful
fluorescence chromatograms of further botanical extracts, the power
and benefit of the feature extraction were demonstrated. Using ANN,
videodensitometric results were improved. If compared to conventional
digital processing, the resolution between two adjacent blue fluorescent
bands increased from 0.95 to 1.18 or between two orange fluorescent
bands from 0.77 to 1.57. The trueness of the new ANN was successfully
verified by comparison with conventional densitometric results of
the absorbance of separated tea extracts. The correlation coefficients
of epigallocatechin gallate therein improved from 0.9889 with median
filter to 0.9959 using this new ANN algorithm. The code was released
open-source to the scientific community as a ready-to-use tool to
exploit this potential, spread its usage, and boost improvements in
planar chromatographic image evaluation
Overview of the ImageCLEF 2020: Multimedia Retrieval in Medical, Lifelogging, Nature, and Internet Applications
This paper presents an overview of the ImageCLEF 2020 lab that was organized as part of the Conference and Labs of the Evaluation Forum - CLEF Labs 2020. ImageCLEF is an ongoing evaluation initiative (first run in 2003) that promotes the evaluation of technologies for annotation, indexing and retrieval of visual data with the aim of providing information access to large collections of images in various usage scenarios and domains. In 2020, the 18th edition of ImageCLEF runs four main tasks: (i) a medical task that groups three previous tasks, i.e., caption analysis, tuberculosis prediction, and medical visual question answering and question generation, (ii) a lifelog task (videos, images and other sources) about daily activity understanding, retrieval and summarization, (iii) a coral task about segmenting and labeling collections of coral reef images, and (iv) a new Internet task addressing the problems of identifying hand-drawn user interface components. Despite the current pandemic situation, the benchmark campaign received a strong participation with over 40 groups submitting more than 295 runs
Overview of the ImageCLEF 2020 ::multimedia retrieval in medical, lifelogging, nature, and internet applications
This paper presents an overview of the ImageCLEF 2020 lab that was organized as part of the Conference and Labs of the Evaluation Forum - CLEF Labs 2020. ImageCLEF is an ongoing evaluation initiative (_rst run in 2003) that promotes the evaluation of technologies for annotation, indexing and retrieval of visual data with the aim of providing information access to large collections of images in various usage scenarios and domains. In 2020, the 18th edition of ImageCLEF runs four main tasks: (i) a medical task that groups three previous tasks, i.e., caption analysis, tuberculosis prediction, and medical visual question answering and question generation, (ii) a lifelog task (videos, images and other sources) about daily activity understanding, retrieval and summarization, (iii) a coral task about segmenting and labeling collections