Proceedings of International Conference on Image Processing

26-29 Oct. 1997

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  • Proceedings International Conference On Image Processing [front matter]

    Publication Year: 1997, Page(s):i - xliv
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    Freely Available from IEEE
  • Exploring image functionalities in WWW applications development of image/video search and editing engines

    Publication Year: 1997, Page(s):1 - 4 vol.3
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (383 KB)

    Image technologies provide critical components for achieving various Web-based multimedia applications. We identify key technical challenges in today's image/video applications on the WWW. We present two prototype systems, a video search engine (WebSEEk) and a compressed video editor (WebClip), to demonstrate technical challenges and viable solutions. We also discuss major issues in developing nex... View full abstract»

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  • Finding people and animals by guided assembly

    Publication Year: 1997, Page(s):5 - 8 vol.3
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    This paper describes a new representation for people and animals, called a body plan. The representation is an organized collection of grouping hints obtained from constraints on color, texture, shape, and geometrical relations. Body plans can be learned from image data, using established statistical learning techniques. Body plans are well adapted to segmentation and recognition in complex enviro... View full abstract»

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  • Effective and ineffective digital watermarks

    Publication Year: 1997, Page(s):9 - 12 vol.3
    Cited by:  Papers (75)  |  Patents (10)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    We have entered an era where inexpensive and readily-available equipment can produce perfect copies of digital multimedia materials, such as CD-quality audio, publication-quality images, or digital video. In this environment, it has become easier for malicious parties to make salable copies of copyrighted content without compensation to the content owner. Many media content owners are concerned ab... View full abstract»

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  • Marking text documents

    Publication Year: 1997
    Cited by:  Papers (36)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (32 KB)

    Summary form only given. Electronic documents are more easily copied and redistributed than paper documents. This is a major impediment to electronic publishing. Illegal redistribution can be discouraged by placing unique marks in each copy and registering the copy with the original recipient. If an illegal copy is discovered, the original recipient can be identified. We describe several invisible... View full abstract»

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  • real-time video on the Web using dynamic rate shaping

    Publication Year: 1997, Page(s):14 - 17 vol.3
    Cited by:  Papers (4)  |  Patents (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (431 KB)

    We propose an architecture which can support video services in networks which have no quality of services (QoS) guarantees. We demonstrate that there is a need for such services today and also in the future, when QoS will be built into most networks. We then describe our current Internet-based system, which combines both image processing and networking techniques in order to provide good quality v... View full abstract»

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  • A chromatic contour detector based on abrupt change techniques

    Publication Year: 1997, Page(s):18 - 21 vol.3
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (430 KB)

    A method for segmenting colored images based on contour detection is described. It involves the use of techniques based on abrupt change detection used in signal processing and control systems. This work is based on a theoretical framework: differential geometry, tensors, Neyman-Pearson's optimal decision. Good results are obtained with Gaussian and exponential noises. This method also provides a ... View full abstract»

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  • Vector valued sigma delta modulators for color image applications

    Publication Year: 1997, Page(s):22 - 25 vol.3
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (342 KB)

    A vector valued /spl Sigma//spl Delta/ modulator is proposed for multi-input signal applications, such as color imaging. Traditional /spl Sigma//spl Delta/ modulators can be modeled with a vector quantizer in 1-D signal space. The proposed /spl Sigma//spl Delta/ modulator extends this concept to M-D vector space. An optimal noise shaping filter for the oversampled vector-valued /spl Sigma//spl Del... View full abstract»

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  • Estimation of nonlinear transfer curves for conversion of color images to a known color space

    Publication Year: 1997, Page(s):26 - 29 vol.3
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This paper presents a supervised algorithm for estimating the unknown nonlinearity undergone by the three color components of an image in the image acquisition process. The algorithm is based on the rank-one hypothesis, which postulates that the linear tristimulus values in a region of uniform surface color lie on a straight line through the origin. An objective function is formulated whose minimi... View full abstract»

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  • Color image enhancement using spatially adaptive saturation feedback

    Publication Year: 1997, Page(s):30 - 33 vol.3
    Cited by:  Papers (28)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (822 KB)

    One way of enhancing color image contrast is to feed back high-frequency spatial information from the saturation component into the luminance component. A new algorithm, which uses a spatially variant measure of salience, is presented. This method offers key improvements to a previous saturation feedback technique. Experimental results confirm that improved color image enhancement is achieved. View full abstract»

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  • Color image compression using an embedded rate scalable approach

    Publication Year: 1997, Page(s):34 - 37 vol.3
    Cited by:  Papers (33)  |  Patents (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (718 KB)

    In this paper we propose a wavelet based coding algorithm for color images using a luminance/chrominance color space. Data rate scalability is achieved by using an embedded coding scheme, which is similar to Shapiro's (1993) embedded zerotree wavelet (EZW) algorithm. In a luminance/chrominance color space, the three color components have little statistical correlation. However, observations are ma... View full abstract»

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  • Selective color correction for arbitrary hues

    Publication Year: 1997, Page(s):38 - 41 vol.3
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (994 KB)

    This paper proposes new selective color correction methods for digital color images, which do not require masking of the correction area. The most commonly employed method can only effectively correct pixels containing one of six specific hues (R.G.B.C.M.Y). In response to this situation, the authors have developed two new selective color correction methods, the HSV method and the RGB subtractive ... View full abstract»

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  • Color spaces for inspection of natural objects

    Publication Year: 1997, Page(s):42 - 45 vol.3
    Cited by:  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (229 KB)

    This paper describes a color space optimized for processing images of uniformly colored objects. Standard RGB color space is an ineffective space for this type of processing due to the high cross-correlation between color channels. The proposed /spl beta//spl delta//spl epsiv/ color space establishes a primary axis containing the expected color range of the object. The second and third coordinates... View full abstract»

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  • Fuzzy error diffusion of color images

    Publication Year: 1997, Page(s):46 - 49 vol.3
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Quantization errors are generally hidden by performing a dithering operation on the image. A common method is to utilize error diffusion. However, this method is prone to error accumulation, resulting in color impulses and streaks. This paper presents an improvement on error diffusion dithering through a fuzzy error diffusion algorithm. In this method, the amount of error to be diffused is determi... View full abstract»

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  • Segmentation of 2D and 3D images through a hierarchical clustering based on region modelling

    Publication Year: 1997, Page(s):50 - 53 vol.3
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (565 KB)

    This paper presents an unsupervised segmentation method applicable to both 2D and 3D images. The segmentation is achieved by a bottom-up hierarchical analysis to progressively agglomerate pixels/voxels in the image into non-overlapped homogeneous regions characterised by a linear signal model. A hierarchy of adjacency graphs is used to describe agglomeration results from the hierarchical analysis,... View full abstract»

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  • Fully Bayesian image segmentation-an engineering perspective

    Publication Year: 1997, Page(s):54 - 57 vol.3
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (501 KB)

    Developments in Markov chain Monte Carlo procedures have made it possible to perform fully Bayesian image segmentation. By this we mean that all the parameters are treated identically, be they the segmentation labels, the class parameters or the Markov random field prior parameters. We perform the analysis by sampling from the posterior distribution of all the parameters. Sampling from the MRF par... View full abstract»

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  • Towards physics-based segmentation of photographic color images

    Publication Year: 1997, Page(s):58 - 61 vol.3
    Cited by:  Papers (12)  |  Patents (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (587 KB)

    In many digital image processing applications, image segmentation is required to provide initial partitioning of local image regions based on certain statistical or contextual homogeneity measures. One goal of image segmentation would be to segment the image into regions that correspond to physically and semantically coherent objects in the scene. We propose an improved color segmentation algorith... View full abstract»

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  • Bayesian estimation of subpixel-resolution motion fields and high-resolution video stills

    Publication Year: 1997, Page(s):62 - 65 vol.3
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (962 KB)

    Multiframe resolution enhancement methods are used to estimate a high-resolution video still (HRVS) from several low-resolution image sequence frames, provided that objects within the video sequence move with subpixel increments. Estimating accurate subpixel-resolution motion vectors is a challenging, albeit critically important component of super-resolution enhancement algorithms. A Bayesian moti... View full abstract»

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  • Psychovisually-based multiresolution image segmentation

    Publication Year: 1997, Page(s):66 - 69 vol.3
    Cited by:  Papers (13)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (563 KB)

    Psychophysical studies have shown that there are three image components of distinct perceptual significance to human observers: strong edges, smooth regions, and textured or detailed regions. A psychophysical test was performed to evaluate the perceptual role of each region and a segmentation algorithm was developed to segment an image into the three regions. The segmentation algorithm identifies ... View full abstract»

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  • Segmentation of compressed documents

    Publication Year: 1997, Page(s):70 - 73 vol.3
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    We present a novel technique for segmentation of a JPEG-compressed document based on block activity. The activity is measured as the number of bits spent to encode each block. Each number is mapped to a pixel brightness value in an auxiliary image which is then used for segmentation. We introduce the use of such an image and show an example of a simple segmentation algorithm, which was successfull... View full abstract»

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  • An image embedding in image by a complexity based region segmentation method

    Publication Year: 1997, Page(s):74 - 77 vol.3
    Cited by:  Papers (8)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (469 KB)

    This paper describes a new technique to embed secret data into a dummy image by using image segmentation based on a local complexity measure. The key idea to this approach is that a binary image can be categorized as "informative" and "noise-like" regions which are segmented by a "complexity measure". If the embedding data is noise-like, we can hide it in the noise-like region of the dummy image. ... View full abstract»

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  • Model based extraction of articulated objects in image sequences for gait analysis

    Publication Year: 1997, Page(s):78 - 81 vol.3
    Cited by:  Papers (41)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (618 KB)

    This paper describes an approach to the extraction of articulated objects which will be used for gait analysis. In most medical applications markers are used to determine trajectories of different body parts. This approach works without any markers. Monotony operators which compute the displacement vector field are used to initialize a contour based tracking algorithm called active rays-for severa... View full abstract»

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  • A binary Markov model for the quantized images and its rate/distortion optimization

    Publication Year: 1997, Page(s):82 - 85 vol.3
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Zerotree based algorithms represent the state of the art in wavelet based image coding. At a high level, these algorithms can be described as first sending a map of the locations of the zero coefficients (the set of zerotree symbols), and then sending the value of nonzero coefficients. However, the decision of what map to send is typically made using some simplifying assumption on the structure of... View full abstract»

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  • Modified rate-distortion function with optimal classification for wavelet coding

    Publication Year: 1997, Page(s):86 - 89 vol.3
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (385 KB)

    We present a wavelet transform based coding approach by employing a modified rate-distortion function and hybrid optimum classification. In the proposed approach, each upper band subimage from wavelet decomposition is optimally classified to achieve the minimum quantization error, according to an efficient prediction model and a modified rate-distortion function. The performance of the asymptotic ... View full abstract»

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  • A class of EZW image coders for noisy channels

    Publication Year: 1997, Page(s):90 - 93 vol.3
    Cited by:  Papers (8)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (707 KB)

    We present a generalized embedded zerotree wavelet image coding algorithm that achieves relatively good tradeoffs between compression performance and channel error resilience and robustness. The proposed algorithm features a relatively simple coding structure, yet it also provides a high level of flexibility. The fundamental approach is to explicitly classify the encoder's output bit sequence into... View full abstract»

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