Open AccessBook
An introduction to digital image processing
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The article was published on 1986-01-01 and is currently open access. It has received 1745 citations till now. The article focuses on the topics: Digital image processing & Image processing.read more
Citations
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Journal ArticleDOI
Design of optimal Gaussian operators in small neighbourhoods
TL;DR: It appears that certain well known masks are relatively inaccurate and anisotropic; new 3 × 3 and 5 × 5 masks are designed which are optimal in these respects.
Proceedings ArticleDOI
Whiteboard Video Summarization via Spatio-Temporal Conflict Minimization
Kenny Davila,Richard Zanibbi +1 more
TL;DR: A method is presented that generates static image summaries of handwritten whiteboard content from lecture videos recorded with still cameras, which generates a spatio-temporal index for the handwritten content in the video, and is used for temporal segmentation by detecting and removing conflicts between content regions.
Journal ArticleDOI
Mobile Retriever: access to digital documents from their physical source
Xu Liu,David Doermann +1 more
TL;DR: An image based document retrieval system which runs on camera enabled mobile devices that uses token triplets that define the orientation of three corresponding tokens to effectively prune the false positives and identify the correct page to retrieve.
Dissertation
Automatic recognition of handwritten medical forms for search engines
TL;DR: It is shown that a few recognized characters, returned by handwriting recognition, can be used to construct a linguistic model capable of representing a medical topic category, thereby improving handwriting recognition performance and allowing PCR (Pre-Hospital Care Report) forms to be tagged with a topic category and subsequently searched by information retrieval systems.
Book ChapterDOI
ISauvola: Improved Sauvola’s Algorithm for Document Image Binarization
TL;DR: In this paper, a new binarization technique for document images is presented, which is based on the most commonly used Binarization method: Sauvola's, which performs relatively well on classical documents, however, three main defects remain: the window parameter does not fit automatically to the image content, is not robust to low contrasts, and is not invariant with respect to contrast inversion.
Related Papers (5)
Survey over image thresholding techniques and quantitative performance evaluation
Mehmet Sezgin,Bulent Sankur +1 more