Evidence map›Paper›PMID 33266959›Full record

ArticleEntropy (Basel, Switzerland)2019

Entropy and Contrast Enhancement of Infrared Thermal Images Using the Multiscale Top-Hat Transform.

Julio César Mello Román, José Luis Vázquez Noguera, Horacio Legal-Ayala, Diego P Pinto-Roa, Santiago Gomez-Guerrero, Miguel García Torres

Abstract read
In one paragraph

Article in Entropy (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

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  14. Entropy in Image Analysis.Entropy (Basel, Switzerland) · 2019
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Julio César Mello RománFacultad Politécnica, Universidad Nacional de Asunción, San Lorenzo 2160, Paraguay.ORCID 0000-0002-3698-4043
José Luis Vázquez NogueraFacultad Politécnica, Universidad Nacional de Asunción, San Lorenzo 2160, Paraguay.ORCID 0000-0002-9766-4182
Horacio Legal-AyalaFacultad Politécnica, Universidad Nacional de Asunción, San Lorenzo 2160, Paraguay.ORCID 0000-0002-1790-2559
Diego P Pinto-RoaFacultad Politécnica, Universidad Nacional de Asunción, San Lorenzo 2160, Paraguay.ORCID 0000-0003-2479-9876
Santiago Gomez-GuerreroFacultad Politécnica, Universidad Nacional de Asunción, San Lorenzo 2160, Paraguay.
Miguel García TorresDivision of Computer Science, Universidad Pablo de Olavide, ES-41013 Seville, Spain.ORCID 0000-0002-6867-7080

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Discrete entropy is used to measure the content of an image, where a higher value indicates an image with richer details. Infrared images are capable of revealing important hidden targets. The disadvantage of this type of image is that their low contrast and level of detail are not consistent with human visual perception. These problems can be caused by variations of the environment or by limitations of the cameras that capture the images. In this work we propose a method that improves the details of infrared images, increasing their entropy, preserving their natural appearance, and enhancing contrast. The proposed method extracts multiple features of brightness and darkness from the infrared image. This is done by means of the multiscale top-hat transform. To improve the infrared image, multiple scales are added to the bright areas and multiple areas of darkness are subtracted. The method was tested with 450 infrared thermal images from a public database. Evaluation of the experimental results shows that the proposed method improves the details of the image by increasing entropy, also preserving natural appearance and enhancing the contrast of infrared thermal images.

Indexed as

discrete entropyinfrared imageslow contrastmultiscale top-hat transform

Identifiers

PMID33266959
PMCPMC7514725

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.