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Table of Contents
Intro; Preface; Acknowledgements; Contents; About the Authors; 1 Distortion-Free Scanning and Copying of Bound Documents; 1.1 Distortion-Free Scanning/Copying of Non-flat Documents; 1.1.1 Introduction; 1.1.2 Distortions at Scanning/Copying; 1.1.3 Splay Profile Estimation by Lateral Cameras; 1.1.4 Correction of the Distortions; 1.1.5 Results; 1.2 Depth Extraction from Single Image Using CNN; References; 2 Document Image Enhancement; 2.1 Restoration of Thick Bound Document Images; 2.1.1 Introduction; 2.1.2 Related Work; 2.1.3 Book Page Segmentation and Skew Recognition
2.1.4 Perspective Distortion Elimination2.1.5 Illumination Equalizing; 2.1.6 Incomplete Placement of the Book on a Scanner Platen; 2.1.7 Results; 2.2 Mobile Image/Document Enhancement; 2.2.1 Geometry Correction Algorithm; 2.2.2 Image Enhancement Algorithm; References; 3 Memory-Efficient Algorithm for Copying Two-Sided Cards; 3.1 Introduction; 3.2 Analysis of Approaches for Orientation Recognition; 3.3 Processing of Card Images; 3.3.1 General Workflow; 3.3.2 Bounding Box Detection; 3.3.3 Skew Angle Estimation; 3.3.4 Segmentation of Digits; 3.3.5 Arabic Digit Recognition
3.3.6 Orientation Detection3.4 Tricks for Memory Optimization; 3.4.1 Rotation in-Place; 3.4.2 Two-Pass Labelling; 3.5 Results; References; 4 Automatic Cropping and Deskew of Multiple Objects; 4.1 Introduction; 4.2 Related Work; 4.3 Auto Cropping and Deskew; 4.3.1 General Workflow; 4.3.2 Preprocessing; 4.3.3 Initial Segmentation; 4.3.4 Classification and Grouping of Connected Regions; 4.3.5 Cropping and Deskew; 4.4 Results; References; 5 Segmentation of Scanned Images of Newspapers and Magazines; 5.1 Introduction; 5.2 Method for Segmentation of Document Image; 5.2.1 A General Construct
5.2.2 Textural Features5.2.3 Dataset; 5.2.4 Segmentation Quality Metrics; 5.2.5 Cross-Validation Scheme; 5.3 Results and Discussion; References; 6 Document Image Classification on the Basis of Layout Information; 6.1 Introduction; 6.2 Related Work; 6.3 Proposed Approach; 6.3.1 Processing Pipeline Overview; 6.3.2 Text Extraction; 6.3.3 Document Layout Descriptors; 6.3.4 Classification Framework; 6.4 Results and Discussion; 6.4.1 Document Dataset; 6.4.2 Experimental Results; References; 7 Piecewise Scanning and Stitching of Large Originals; 7.1 Introduction; 7.2 Related Work
7.3 Proposed Method7.3.1 Feature Point Detection; 7.3.2 Image Matching and Coordinate Transformations; 7.3.3 Blending of a Pair of Images; 7.3.4 Blending Image Mosaics; 7.4 Results; References; 8 Fast Control of JPEG Compression Rate; 8.1 Introduction; 8.2 Problem Formulation; 8.3 Related Work; 8.4 Description of Method; 8.4.1 Algorithm Overview; 8.4.2 Adaptive Bit Count Predictor; 8.4.3 Fast RC Mode; 8.4.4 LS RC Mode; 8.4.5 DP RC Mode; 8.4.6 Colour Image Processing; 8.5 Experimental Results; 8.5.1 Performance Metrics; 8.5.2 Test Conditions; 8.5.3 Summary of Results
2.1.4 Perspective Distortion Elimination2.1.5 Illumination Equalizing; 2.1.6 Incomplete Placement of the Book on a Scanner Platen; 2.1.7 Results; 2.2 Mobile Image/Document Enhancement; 2.2.1 Geometry Correction Algorithm; 2.2.2 Image Enhancement Algorithm; References; 3 Memory-Efficient Algorithm for Copying Two-Sided Cards; 3.1 Introduction; 3.2 Analysis of Approaches for Orientation Recognition; 3.3 Processing of Card Images; 3.3.1 General Workflow; 3.3.2 Bounding Box Detection; 3.3.3 Skew Angle Estimation; 3.3.4 Segmentation of Digits; 3.3.5 Arabic Digit Recognition
3.3.6 Orientation Detection3.4 Tricks for Memory Optimization; 3.4.1 Rotation in-Place; 3.4.2 Two-Pass Labelling; 3.5 Results; References; 4 Automatic Cropping and Deskew of Multiple Objects; 4.1 Introduction; 4.2 Related Work; 4.3 Auto Cropping and Deskew; 4.3.1 General Workflow; 4.3.2 Preprocessing; 4.3.3 Initial Segmentation; 4.3.4 Classification and Grouping of Connected Regions; 4.3.5 Cropping and Deskew; 4.4 Results; References; 5 Segmentation of Scanned Images of Newspapers and Magazines; 5.1 Introduction; 5.2 Method for Segmentation of Document Image; 5.2.1 A General Construct
5.2.2 Textural Features5.2.3 Dataset; 5.2.4 Segmentation Quality Metrics; 5.2.5 Cross-Validation Scheme; 5.3 Results and Discussion; References; 6 Document Image Classification on the Basis of Layout Information; 6.1 Introduction; 6.2 Related Work; 6.3 Proposed Approach; 6.3.1 Processing Pipeline Overview; 6.3.2 Text Extraction; 6.3.3 Document Layout Descriptors; 6.3.4 Classification Framework; 6.4 Results and Discussion; 6.4.1 Document Dataset; 6.4.2 Experimental Results; References; 7 Piecewise Scanning and Stitching of Large Originals; 7.1 Introduction; 7.2 Related Work
7.3 Proposed Method7.3.1 Feature Point Detection; 7.3.2 Image Matching and Coordinate Transformations; 7.3.3 Blending of a Pair of Images; 7.3.4 Blending Image Mosaics; 7.4 Results; References; 8 Fast Control of JPEG Compression Rate; 8.1 Introduction; 8.2 Problem Formulation; 8.3 Related Work; 8.4 Description of Method; 8.4.1 Algorithm Overview; 8.4.2 Adaptive Bit Count Predictor; 8.4.3 Fast RC Mode; 8.4.4 LS RC Mode; 8.4.5 DP RC Mode; 8.4.6 Colour Image Processing; 8.5 Experimental Results; 8.5.1 Performance Metrics; 8.5.2 Test Conditions; 8.5.3 Summary of Results