Search results for "Acoustical imaging"

showing 3 items of 3 documents

Wooden panel paintings investigation: An air-coupled ultrasonic imaging approach

2007

In this paper, a method for the study of wooden panel paintings using air-coupled acoustical imaging is presented. In order to evaluate the advantages of the technique, several samples were made to mimic panel paintings along with their typical defects. These specimens were tested by means of both single-sided and through-transmission techniques using planar transducers. Image data were processed by means of a two-dimensional (2-D)-fast Fourier transform-based algorithm to increase the S/N ratio and 2-D representations (C-scans) were generated. The simulated defects were imaged using both configurations. Investigations were undertaken on four antique paintings from a private collection. The…

Acoustical imagingEngineeringAcoustics and Ultrasonicsbusiness.industryAirFast Fourier transformImage processingStructural engineeringWoodUltrasonic imagingsymbols.namesakeFourier transformNondestructive testingImage Interpretation Computer-AssistedMaterials TestingsymbolsPaintingsElectrical and Electronic EngineeringAir coupledbusinessInstrumentationAlgorithmsUltrasonographyIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
researchProduct

Air-Coupled Imaging Method Applied to the Study and Conservation of Paintings

2007

An air-coupled acoustical imaging method for the study of wooden panel paintings is presented. After a brief overview of the state of the art, an introduction is given regarding the production technique of the art object under investigation. The technology employed is described in detail, as well as the proposed method. After a feasibility campaign of experiments, real ancient paintings have been investigated by means of a through-transmission and a single-sided lay-out. Defects were imaged in all the objects examined and in both the configurations adopted

Acoustical imagingPaintingComputer graphics (images)media_common.quotation_subjectComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONArtAir coupledObject (philosophy)GeneralLiterature_MISCELLANEOUSVisual artsmedia_common
researchProduct

Review of Advanced Acoustical Imaging Techniques for Nondestructive Evaluation of Art Objects

2006

Proper preventative diagnosis of different art objects, including wooden, bronze and marble sculptures, frescoes, and paintings (on canvas, wood, metal, and glass), is very important for conservation purposes. Various advanced ultrasonic imaging methods for analysis and assessment of art objects can bring about drastic changes in the regular evaluation and inventory carried out by museums and can bring advanced, powerful, and new techniques for objective assessment of physical conditions of museum resplendence. Using these methods, it will be possible to plan ad hoc repair works on art objects, and, as a result, we will preserve our heritage. The goal of this review is to introduce recent a…

Acoustical imagingEngineering drawingPaintingEngineeringSculpturebusiness.industryMechanical EngineeringPlan (drawing)Condensed Matter PhysicsField (computer science)Characterization (materials science)Objective assessmentMechanics of MaterialsNondestructive testingGeneral Materials SciencebusinessResearch in Nondestructive Evaluation
researchProduct