Riesz pyramids for fast phase-based video magnification

Abstract

We present a new compact image pyramid representation, the Riesz pyramid, that can be used for real-time phase-based motion magnification. Our new representation is less overcomplete than even the smallest two orientation, octave-bandwidth complex steerable pyramid, and can be implemented using compact, efficient linear filters in the spatial domain. Motion-magnified videos produced with this new representation are of comparable quality to those produced with the complex steerable pyramid. When used with phase-based video magnification, the Riesz pyramid phase-shifts image features along only their dominant orientation rather than every orientation like the complex steerable pyramid.

Visual vibrometry: Estimating material properties from small motions in video

“…We build on several recent works in vision and graphics that address small motions in video [31,28,29,21]. As with many of these works, our method uses phase variations of the complex steerable pyramid [26,20] to represent small local motions in video.…”

Performance Analysis of Eulerian Colour and Motion Magnification Techniques

“…Çıkış dizisi kullanıcının, sanki fiziksel hareketlerin kendisi büyütülmüş, daha sonra kaydedilmiş gibi sezgisel bir görüntüdeki büyütülmüş hareketlerin şekil ve karakteristiklerini görmesine izin vermektedir. Bu çalışmada, kaliteli bir çıkış görüntüsü elde etmek için hareket bölütleme ve resim içinde boyama gibi ek yöntemler kullanıldığı için algoritmanın karmaşıklığının artması olumsuz yön olarak görülmüştür (Rubinstein, 2014;Wu et al 2012;Liu et al 2014;Sarode and Mandaogade 2014a;Sarode and Mandaogade 2014b;Liu et al 2005 (Javaid et al 2013;Rubinstein, 2014;Wu et al 2012;DoneshiKohan and NasrAbadi 2014;Wadhwa et al 2013;Chambino, 2013;Liu et al 2014;Gogia and Liu 2014;Elgharib et al 2015;Brecelj, 2013;Wadhwa et al 2014;Carvalho and Virani 2014;Ryan, 2014;He et al 2014). Bu yöntem, optik akış algoritmalarının temelini oluşturan aynı diferansiyel yaklaşıma dayanmaktadır (Rubinstein, 2014;Wu et al 2012;Sarode and Mandaogade 2014a;Sarode and Mandaogade 2014b;.…”

Smaller than the Eye Can See: Selected Applications of Video-based Measurement

“…The full descriptions for the processing procedures can be found in the following cited papers for readers requiring more detail [1][2][3][4][5][6].…”

“…The result is a video with motion in the specified band of temporal frequencies amplified and made more visible. This procedure can be run in real-time for reasonably sized videos and framerates with a slightly different processing procedure [2].…”