Jechang Jeong
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View article: Forward Warping-Based Video Frame Interpolation Using a Motion Selective Network
Forward Warping-Based Video Frame Interpolation Using a Motion Selective Network Open
Recently, deep neural networks have shown surprising results in solving most of the traditional image processing problems. However, the video frame interpolation field does not show relatively good performance because the receptive field r…
View article: Multi-Color Space Network for Salient Object Detection
Multi-Color Space Network for Salient Object Detection Open
The salient object detection (SOD) technology predicts which object will attract the attention of an observer surveying a particular scene. Most state-of-the-art SOD methods are top-down mechanisms that apply fully convolutional networks (…
View article: Pre-Processing Filter Reflecting Human Visual Perception to Improve Saliency Detection Performance
Pre-Processing Filter Reflecting Human Visual Perception to Improve Saliency Detection Performance Open
Salient object detection is a method of finding an object within an image that a person determines to be important and is expected to focus on. Various features are used to compute the visual saliency, and in general, the color and luminan…
View article: Deceptive Techniques to Hide a Compressed Video Stream for Information Security
Deceptive Techniques to Hide a Compressed Video Stream for Information Security Open
With the recent development of video compression methods, video transmission on traditional devices and video distribution using networks has increased in various devices such as drones, IP cameras, and small IoT devices. As a result, the …
View article: Novel blind interleaver parameters estimation based on Hamming weight distribution of linear codes
Novel blind interleaver parameters estimation based on Hamming weight distribution of linear codes Open
Interleaving techniques are used to improve the probability of error correction in communication systems. In a non-cooperative context, interleaver parameters must be determined first so that the received data can be decoded into relevant …
View article: Blind Interleaver Parameters Estimation Using Kolmogorov–Smirnov Test
Blind Interleaver Parameters Estimation Using Kolmogorov–Smirnov Test Open
The use of error-correcting codes (ECCs) is essential for designing reliable digital communication systems. Usually, most systems correct errors under cooperative environments. If receivers do not know interleaver parameters, they must fir…
View article: Distributed Arithmetic Coding for Sources with Hidden Markov Correlation
Distributed Arithmetic Coding for Sources with Hidden Markov Correlation Open
Distributed arithmetic coding (DAC) has been shown to be effective for Slepian-Wolf coding, especially for short data blocks. In this letter, we propose to use the DAC to compress momery-correlated sources. More specifically, the correlati…
View article: Performance Comparison of Weak Filtering in HEVC and VVC
Performance Comparison of Weak Filtering in HEVC and VVC Open
This study describes the need to improve the weak filtering method for the in-loop filter process used identically in versatile video coding (VVC) and high efficiency video coding (HEVC). The weak filtering process used by VVC has been ado…
View article: Despeckling Algorithm for Removing Speckle Noise from Ultrasound Images
Despeckling Algorithm for Removing Speckle Noise from Ultrasound Images Open
Ultrasound (US) imaging can examine human bodies of various ages; however, in the process of obtaining a US image, speckle noise is generated. The speckle noise inhibits physicians from accurately examining lesions; thus, a speckle noise r…
View article: NTIRE 2020 Challenge on Real Image Denoising: Dataset, Methods and Results
NTIRE 2020 Challenge on Real Image Denoising: Dataset, Methods and Results Open
This paper reviews the NTIRE 2020 challenge on real image denoising with focus on the newly introduced dataset, the proposed methods and their results. The challenge is a new version of the previous NTIRE 2019 challenge on real image denoi…
View article: NTIRE 2020 Challenge on Real Image Denoising: Dataset, Methods and\n Results
NTIRE 2020 Challenge on Real Image Denoising: Dataset, Methods and\n Results Open
This paper reviews the NTIRE 2020 challenge on real image denoising with\nfocus on the newly introduced dataset, the proposed methods and their results.\nThe challenge is a new version of the previous NTIRE 2019 challenge on real\nimage de…
View article: NTIRE 2020 Challenge on Image Demoireing: Methods and Results
NTIRE 2020 Challenge on Image Demoireing: Methods and Results Open
This paper reviews the Challenge on Image Demoireing that was part of the New Trends in Image Restoration and Enhancement (NTIRE) workshop, held in conjunction with CVPR 2020. Demoireing is a difficult task of removing moire patterns from …
View article: Improved non-local mean denoising algorithm based reliability of reference pixel
Improved non-local mean denoising algorithm based reliability of reference pixel Open
In this paper, we propose a method for improved the non-local mean denoising algorithm by using the similarity in comparison with reference pixels. The noise in image is eliminated by the calculation to follow values as the patterns are si…
View article: Single Image Super-Resolution Using CARDB Based on Iterative Up-Down Sampling Architecture
Single Image Super-Resolution Using CARDB Based on Iterative Up-Down Sampling Architecture Open
View article: Deblocking performance analysis of weak filter on versatile video coding
Deblocking performance analysis of weak filter on versatile video coding Open
The deblocking filter of the versatile video‐coding (VVC) standard is included in the form of an in‐loop filter, as a high efficiency video coding (HEVC) standard. The specifics of the deblocking filter of the VVC remain unchanged from tha…
View article: Speckle Noise Reduction Technique for SAR Images Using Statistical Characteristics of Speckle Noise and Discrete Wavelet Transform
Speckle Noise Reduction Technique for SAR Images Using Statistical Characteristics of Speckle Noise and Discrete Wavelet Transform Open
Synthetic aperture radar (SAR) images map Earth’s surface at high resolution, regardless of the weather conditions or sunshine phenomena. Therefore, SAR images have applications in various fields. Speckle noise, which has the characteristi…
View article: Video Compression Standard Prediction using Attention-based Bidirectional LSTM
Video Compression Standard Prediction using Attention-based Bidirectional LSTM Open
View article: Local Excitation Network for Restoring a JPEG-Compressed Image
Local Excitation Network for Restoring a JPEG-Compressed Image Open
Joint photographic experts group (JPEG) compression is lossy compression, and degradation of image quality worsens at high compression ratios. Therefore, a reconstruction process is required for a visually pleasant image. In this paper, we…
View article: Color Filter Array Demosaicking Using Densely Connected Residual Network
Color Filter Array Demosaicking Using Densely Connected Residual Network Open
Deep convolutional neural networks have been used extensively in recent image processing research, exhibiting drastically improved performance. In this study, we apply convolutional neural networks to color filter array demosaicking, which…
View article: Computer Vision-based Method to Detect Fire Using Color Variation in Temporal Domain
Computer Vision-based Method to Detect Fire Using Color Variation in Temporal Domain Open
View article: Fast Partition Decision Using Rotation Forest for Intra-Frame Coding in HEVC Screen Content Coding Extension
Fast Partition Decision Using Rotation Forest for Intra-Frame Coding in HEVC Screen Content Coding Extension Open
View article: Multi-scale Decomposition tone mapping using Guided Image Filter
Multi-scale Decomposition tone mapping using Guided Image Filter Open
View article: Probability density estimation based on the Parzen window for fast CU size decision of HEVC intra coding
Probability density estimation based on the Parzen window for fast CU size decision of HEVC intra coding Open
The critical problem with the practical implementation of the high efficiency video coding (HEVC) encoder is the computational complexity.Complexity increases because of its novel techniques, such as quad-tree-based block partitioning.Thus…
View article: Weighted Sum-Based Color Filter Array Interpolation Using Taylor Series Cubic Approximation
Weighted Sum-Based Color Filter Array Interpolation Using Taylor Series Cubic Approximation Open
In this paper, we introduce a weighted sum-based color filter array interpolation method using Taylor series cubic approximation. We use a high-order approximation to predict accurate pixel values during the reconstruction of quincunx grid…
View article: Decision-Based Demosaicking Algorithm Using Bayesian Theorem
Decision-Based Demosaicking Algorithm Using Bayesian Theorem Open
In this paper, we introduce a new color filter array interpolation based on edge map prediction using the Bayesian theorem. The edge information obtained at the position of the green component sampled in the quincunx grid using the Bayer p…
View article: Quadratic Taylor Approximation Demosaicking System Using Post-Processing for Zipper Artifact Removal
Quadratic Taylor Approximation Demosaicking System Using Post-Processing for Zipper Artifact Removal Open
In this paper, we propose a new demosaicking system that uses post-processing technique to remove zipper artifacts that are primarily caused by improper interpolation in a quincunx-sampled green plane. We use a high-order approximation to …
View article: Clustering Based Local Tone Mapping Algorithm for Displaying HDR Images on LDR Devices
Clustering Based Local Tone Mapping Algorithm for Displaying HDR Images on LDR Devices Open
In order to display HDR (High Dynamic Range) images with increased dynamic range on LDR (Low Dynamic Range) monitors, it is necessary to perform a tone mapping technique, which is a process of compressing a dynamic range of an image.Repres…
View article: Adaptive Edge-Directed Interpolation Using Edge Map Analysis
Adaptive Edge-Directed Interpolation Using Edge Map Analysis Open
In this paper, an edge-directed interpolation is proposed using edge map analysis. Conventional algorithms have various disadvantages (edge blurring effect, excessive computational complexity, etc.) by performing interpolation without dist…
View article: Video thumbnail extraction for HEVC
Video thumbnail extraction for HEVC Open
View article: Hierarchical Motion-Compensated Frame Rate Up-Conversion Using Gaussian Pyramid and Guidance Motion Vector
Hierarchical Motion-Compensated Frame Rate Up-Conversion Using Gaussian Pyramid and Guidance Motion Vector Open
\nThis paper proposes fast and accurate frame rate up-conversion algorithm for both software and hardware. The proposed algorithm first construct Gaussian pyramid structure using 3×3 Gaussian mask. After constructing Gaussian pyramid, forw…