Finding out general tendencies in speckle noise reduction in ultrasound images

Mateo, Juan L.; Fernández-Caballero, Antonio

doi:10.1016/j.eswa.2008.11.029

Cited by 124 publications

(66 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Instead of selecting an optimal threshold, a different method was proposed in the literature that detail coefficients are set to zero [16]. This method accepts that not only small values but also large values of detail coefficients have speckle noise.…”

Section: A Gungor and I Karagozmentioning

confidence: 99%

Comparing Non-homomorphic and Homomorphic Wavelet Filtering Techniques for Speckled Images

Gungor¹,

Karagoz²

2016

IJCTE

View full text Add to dashboard Cite

Abstract-Speckle is a multiplicative noise which decreases the quality of an ultrasound image. Thus speckle reduction has become a very essential exercise for diagnoses. A wavelet-based image denoising technique is an effective filter to reduce speckle. Homomorphic processing is an approach for wavelet filtering. In this approach, to convert multiplicative noise into additive noise, first logarithmic transform is performed, and then wavelet filtering and exponential operation are performed. In the non-homomorphic approach, wavelet filtering is applied directly to the speckled image without any log or exponential operation. The present study compares the non-homomorphic and the homomorphic wavelet filtering techniques for the speckled images. Quantitative and qualitative results demonstrate that the non-homomorphic technique has higher performance than the homomorphic technique.Index Terms-Image denoising, speckle noise, ultrasonic imaging, wavelet filtering.

show abstract

Section: A Gungor and I Karagozmentioning

confidence: 99%

Comparing Non-homomorphic and Homomorphic Wavelet Filtering Techniques for Speckled Images

Gungor¹,

Karagoz²

2016

IJCTE

View full text Add to dashboard Cite

show abstract

“…In older versions, Polaroid cameras were used. Today, algorithms have been proposed to manage and classify (in an unsupervised fashion) the vast amount of noisy images found in the medical unit [112] [113] [114] as well as the use of fuzzy logic [115].…”

Section: Aids For Measurement and Registermentioning

confidence: 99%

Application of ultrasound in medicine part ii: the ultrasonic transducer and its associated electronics

2013

View full text Add to dashboard Cite

This paper introduces the reader to a review and analysis of various ultrasound (us) applications in the medical field. First, the transducer is shown, along with a diagram of the basic electronics that it uses to generate and receive signals that allow the reconstruction of images, for medical purposes. Also, us practical uses in medical therapy is shown. This subject is addressed by combining the physical principles involved in the us application, with the implemented technology and the modes of operation for non-invasive studies of pathologies related to brain, heart, and eyes such as injuries, tumors and hematomas. The methodology used in this article also suggests an analysis method for the us scientific and technological research principles combined for their implementation in medical applications.Keywords: ultrasonic transducer, piezoelectric, transmitter, receiver, converter, modes ResumenEn este trabajo se presenta al lector una revisión y análisis de diferentes aplicaciones del ultrasonido (us) en el campo médico. Inicialmente se muestra el transductor y un esquema de su electrónica básica asociada usada para emitir y adquirir las señales que permiten la reconstrucción de las imágenes, para efectos médicos y también la aplicación del us para terapia; la temática se aborda conjugando los principios físicos asociados a la aplicación del us con la tecnología implementada y sus modos de operación, para estudios no invasivos de patologías relacionadas con el cerebro, el corazón, los ojos y lesiones tales como tumores y hematomas. La metodología implementada en este artículo sugiere también un método de análisis de los principios científicos del us e investigación tecnológica asociadas para su concreción en las aplicaciones médicas.

show abstract

“…Removing noise from the original image is still a challenging research in image processing and many studies have been conducted to develop specific methods dedicated to despeckling ultrasound images [4,13,14]. With the rapid proliferation of despeckling filters, denoise evaluation has been becoming an important issue.…”

Section: Introductionmentioning

confidence: 99%

“…Speckle degrades the quality of ultrasound images, and thus affects diagnosis. Thus, speckle reduction has become an important task in many applications with ultrasound imaging [13].…”

Section: Introductionmentioning

confidence: 99%