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Lecture Digital image processing: Image acquisition, types, and file I/O - Nguyễn Công Phương

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Lecture Digital image processing: Image acquisition, types, and file I/O - Nguyễn Công Phương

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This chapter presents image acquisition, types, and file I/O. The main contents of this chapter include all of the following: Image acquisition, image types & file I/O, basics of color images. Inviting you refer.

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Nội dung Text: Lecture Digital image processing: Image acquisition, types, and file I/O - Nguyễn Công Phương

  1. Nguyễn Công Phương DIGITAL IMAGE PROCESSING Image Acquisition, Types, and File I/O
  2. Contents I. Introduction to Image Processing & Matlab II. Image Acquisition, Types, & File I/O III. Image Arithmetic IV. Affine & Logical Operations, Distortions, & Noise in Images V. Image Transform VI. Spatial & Frequency Domain Filter Design VII. Image Restoration & Blind Deconvolution VIII. Image Compression IX. Edge Detection X. Binary Image Processing XI. Image Encryption & Watermarking XII. Image Classification & Segmentation XIII. Image – Based Object Tracking XIV. Face Recognition XV. Soft Computing in Image Processing sites.google.com/site/ncpdhbkhn 2
  3. Image Acquisition, Types, and File I/O 1. Image Acquisition 2. Image Types & File I/O 3. Basics of Color Images sites.google.com/site/ncpdhbkhn 3
  4. Image Acquisition • Real – world 3D objects are converted into digital images: – Cameras – Ultrasounds – X-rays & radiography – Magnetic resonance imaging (MRI) – Satellite imagers • Scanners. sites.google.com/site/ncpdhbkhn 4
  5. Image Types & File I/O • Image types: – Bitmap (.bmp) – Joint Photographic Experts Group (.jpg) – Graphics Interchange Format (.gif) – Tagged Image File Format (.tif) –… • File I/O: – Read: imread – Show: imshow – Write: imwrite sites.google.com/site/ncpdhbkhn 5
  6. Basic of Color Images (1) http://drmoron.org/is‐black‐a‐color/ sites.google.com/site/ncpdhbkhn 6
  7. Basic of Color Images (2) 76 50   68 49    106 110  73 91    116 111  71 98    sites.google.com/site/ncpdhbkhn 7
  8. Basic of Color Images (3) https://andrewharvey4.wordpress.com/2009/08/22/comp3421‐lec‐1‐colour/ sites.google.com/site/ncpdhbkhn 8
  9. Basic of Color Images (4) YIQ Color Space Y   0.299 0.587 0.144   R   I    0.596 0.275 0.321 G       Q   0.212 0.528 0.311   B   R   0.9736 0.9873 0.5682  Y  G    0.9675 0.2385 0.6941  I        B   0.9789 1.0779 1.6497  Q  sites.google.com/site/ncpdhbkhn 9
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