Transform coding of images using local orientation adaptivity

A.M. Dijk, van

    Research output: Contribution to journalArticleAcademicpeer-review

    Abstract

    Conventional image decomposition techniques are limited in their redundancy reduction properties due to their inability to detect essential structural aspects in images. By using image analysis tools that are capable of detecting and extracting important image structures, however, more efficient coding algorithms can be developed. Also, content-based coding enables compression algorithms to be tuned more specifically to visually important image elements. To demonstrate the efficiency of such a content-based approach, we present an image compression scheme based on a Hermite transform that adapts to local image orientations. Simulations show that orientation adaptivity results in a significant reduction of redundancy. Comparisons with other compression techniques such as JPEG indicate that the proposed scheme performs very well for high compression ratios, not only in terms of peak-signal-tonoise ratio but also in terms of perceptual image quality.
    Original languageEnglish
    Pages (from-to)57-65
    Number of pages9
    JournalIPO Annual Progress Report
    Volume30
    Publication statusPublished - 1995

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    Redundancy
    Image compression
    Image analysis
    Image quality
    Decomposition

    Cite this

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    title = "Transform coding of images using local orientation adaptivity",
    abstract = "Conventional image decomposition techniques are limited in their redundancy reduction properties due to their inability to detect essential structural aspects in images. By using image analysis tools that are capable of detecting and extracting important image structures, however, more efficient coding algorithms can be developed. Also, content-based coding enables compression algorithms to be tuned more specifically to visually important image elements. To demonstrate the efficiency of such a content-based approach, we present an image compression scheme based on a Hermite transform that adapts to local image orientations. Simulations show that orientation adaptivity results in a significant reduction of redundancy. Comparisons with other compression techniques such as JPEG indicate that the proposed scheme performs very well for high compression ratios, not only in terms of peak-signal-tonoise ratio but also in terms of perceptual image quality.",
    author = "{Dijk, van}, A.M.",
    year = "1995",
    language = "English",
    volume = "30",
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    journal = "IPO Annual Progress Report",
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    }

    Transform coding of images using local orientation adaptivity. / Dijk, van, A.M.

    In: IPO Annual Progress Report, Vol. 30, 1995, p. 57-65.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Transform coding of images using local orientation adaptivity

    AU - Dijk, van, A.M.

    PY - 1995

    Y1 - 1995

    N2 - Conventional image decomposition techniques are limited in their redundancy reduction properties due to their inability to detect essential structural aspects in images. By using image analysis tools that are capable of detecting and extracting important image structures, however, more efficient coding algorithms can be developed. Also, content-based coding enables compression algorithms to be tuned more specifically to visually important image elements. To demonstrate the efficiency of such a content-based approach, we present an image compression scheme based on a Hermite transform that adapts to local image orientations. Simulations show that orientation adaptivity results in a significant reduction of redundancy. Comparisons with other compression techniques such as JPEG indicate that the proposed scheme performs very well for high compression ratios, not only in terms of peak-signal-tonoise ratio but also in terms of perceptual image quality.

    AB - Conventional image decomposition techniques are limited in their redundancy reduction properties due to their inability to detect essential structural aspects in images. By using image analysis tools that are capable of detecting and extracting important image structures, however, more efficient coding algorithms can be developed. Also, content-based coding enables compression algorithms to be tuned more specifically to visually important image elements. To demonstrate the efficiency of such a content-based approach, we present an image compression scheme based on a Hermite transform that adapts to local image orientations. Simulations show that orientation adaptivity results in a significant reduction of redundancy. Comparisons with other compression techniques such as JPEG indicate that the proposed scheme performs very well for high compression ratios, not only in terms of peak-signal-tonoise ratio but also in terms of perceptual image quality.

    M3 - Article

    VL - 30

    SP - 57

    EP - 65

    JO - IPO Annual Progress Report

    JF - IPO Annual Progress Report

    SN - 0921-2566

    ER -