The Video Sequences Quality with Wavelet Coding at Different Channel Bandwidth

Patlayenko, Mikola; Osharovska, Olena; Pyliavskyi, Volodymyr

doi:10.1109/telecom50385.2020.9299572

Cited by 5 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, information about the high frequency components can be extracted from the low frequency ones. For each frame on the receiving side, the reverse wavelet transform reconstructs the image, including the high-frequency coefficients by the interpolation method [5,6]. In the encoder, frames are decimated and only every second of the video sequence is transmitted.…”

Section: Hierarchical Wavelet Decompositionmentioning

confidence: 99%

See 1 more Smart Citation

Jakościowa Estymacja Skompresowanych Plików Video Typu DVC Z Zastosowaniem Transformacji Falkowych

PATLAIENKO¹,

OSHAROVSKAYA²

2022

Przetwarzanie, Transmisja I Bezpieczeństwo Informacji

View full text Add to dashboard Cite

Opiekun naukowy: Valentyna SOLODKA 3 JAKO CIOWA ESTYMACJA SKOMPRESOWANYCH PLIKÓW VIDEO TYPU DVC Z ZASTOSOWANIEM TRANSFORMACJI FALKOWYCH Streszczenie: W artykule rozwa a si zastosowanie system DVC do przesyłu obrazów wideo o wysokiej-rozdzielczo ci. W proponowanym systemie stosuje si hierarchiczne transformaty falkowe. W przypadku kodowania typu DVC, zło ono rachunkowa analizy sygnału (ramek obrazu) jest charakterystyczna dla dekodera. Po stronie transmisji sygnału, enkoder u ywa współczynników niskich cz stotliwo ci ósmego i dziewi tego poziomu do dekompozycji transformat falkowych jako kluczowych ramek/klatek. Co druga ramka jest pomijana, ale jest interpolowana w dekoderze przez kluczowe ramki, ponadto uwzgl dnia si dodatkowe informacje zawieraj ce współczynniki falkowe do predykcji bł dów. W pracy dokonano porównania pakietów oprogramowania tj. dokonuj cego fragmentacji oraz codec-a DISCOVER, uwzgl dniano/kasowano bł dy logiczne zwi zane z proporcj "sygnału-doszumu". Dokonano estymacji zło ono ci ró nych sekwencji video. Uwzgl dniono dodatkowe kryterium BD-PSNR.

show abstract

Section: Hierarchical Wavelet Decompositionmentioning

confidence: 99%

“…In order to overcome this problem, it is recommended to use the following approach. A video codec is implemented, which follows the scheme described in [4], [5].…”

Section: Evaluation Of An Interframe Prediction Algorithm Using a Dis...mentioning

confidence: 99%

Jakościowa Estymacja Skompresowanych Plików Video Typu DVC Z Zastosowaniem Transformacji Falkowych

PATLAIENKO¹,

OSHAROVSKAYA²

2022

Przetwarzanie, Transmisja I Bezpieczeństwo Informacji

View full text Add to dashboard Cite

show abstract

“…DWT is one of the most widely used multi-resolution transforms. It is used in video and image processing tasks for transitioning data from the time domain to the frequency domain, being offers flexibility, robustness performance, and it splits the low and high frequency contents, so it needs less memory space [15], [16]. Typically, DWT was applied to every block of the frame to decompose the frame into LL, LH, HL, and HH subbands at different levels of resolution.…”

Section: Introductionmentioning

confidence: 99%

Propose shot boundary detection methods by using visual hybrid features

Abdulsahib

Abdulmunim²

2023

IJECE

View full text Add to dashboard Cite

<span lang="EN-US">Shot boundary detection is the fundamental technique that plays an important role in a variety of video processing tasks such as summarization, retrieval, object tracking, and so on. This technique involves segmenting a video sequence into shots, each of which is a sequence of interrelated temporal frames. This paper introduces two methods, where the first is for detecting the cut shot boundary via employing visual hybrid features, while the second method is to compare between them. This enhances the effectiveness of the performance of detecting the shot by selecting the strongest features. The first method was performed by utilizing hybrid features, which included statistics histogram of hue-saturation-value color space and grey level co-occurrence matrix. The second method was performed by utilizing hybrid features that include discrete wavelet transform and grey level co-occurrence matrix. The frame size decreased. This process had the advantage of reducing the computation time. Also used local adaptive thresholds, which enhanced the method’s performance. The tested videos were obtained from the BBC archive, which included BBC Learning English and BBC News. Experimental results have indicated that the second method has achieved (97.618%) accuracy performance, which was higher than the first and other methods using evaluation metrics.</span>

show abstract