Add extraction scripts and initial work on markdown

NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md

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+---
+title: NOTES ON OPTICAL PRINTER TECHNIQUE
+author: Dennis Couzin
+date: "March 1983"
+...
+\pagenumbering{gobble}
+\newpage
+\pagenumbering{arabic}
+::: {.indexTable}
+
+|   |   |   |   |
+|-----|-----|-----|-----|
+| Magnification      | 1 | Fades in Original            | 14 |
+| Blowup & Reduction | 2 | Chart C: Neutral Density     |    |
+| Blowup Sharpness   | 2 |   and Equivalent Shutter     |    |
+| Printer Lenses     | 3 |                    Angle     | 15 |
+| Optical Zoom       | 3 | Image Superposition          | 16 |
+| Lens Aperture      | 3 | Gamma & Bipack               | 16 |
+| Focusing           | 4 | Incidentally                 | 16 |
+| Focusing Aperture  | 4 | Exposure Compensation        | 18 |
+| Focusing Precision | 4 | Special Originals            | 18 |
+| Focusing Target    | 4 | Texturing                    | 18 |
+| Depth of Field     | 4 | Multi-Exposure               | 19 |
+| Bolex Prism        | 4 | Multi-Pack                   | 19 |
+| Bolex Groundglass  | 4 | Natural Superposition        | 19 |
+| Defocus            | 4 | Flashing                     | 19 |
+| X-Y Adjustment     | 4 | Contrast Adjustment          | 19 |
+| Exact 1:1          | 5 | Color Image Superposition    | 20 |
+| Aimframe           | 5 | Weighted Double Exposures    | 20 |
+| Framelines         | 6 | Dissolves                    | 21 |
+| Emulsion Position  | 7 | Effects Dissolves            | 21 |
+| Time               | 8 | Fades from Negative          | 21 |
+| Fancy Freeze       | 8 | Color Exposure               | 22 |
+| Fancy Slow         | 8 | Testing                      | 22 |
+| Diffusers          | 8 | CC Pack Reduction            | 25 |
+| UV Filter          | 9 | High Contrast Prints         | 25 |
+| IR Filter          | 9 | Hicon Exposure               | 26 |
+| Green Filter       | 3 | Contrast Building Steps      | 26 |
+| Filter Location    | 9 | Hicon Speckle                | 26 |
+| Exposure           | 9 | Tone Isolation               | 27 |
+| Exposure Adjusters | 9 | Logic of Mask Combination    | 27 |
+| Specifying Exposure | 11 | Image Spread and Bloom     | 27 |
+| Film Speed          | 11 | Mask and Countermask       | 28 |
+| Right Exposure      | 11 | Reversal/Negative Fitting  | 28 |
+| Generations         | 12 | Feathered Maska            | 29 |
+| Bellows Formula     | 13 | Image Marriage             | 29 |
+| Fades               | 13 | Mask Blackness             | 30 |
+| Log Fade            | 14 | Hicona from Color Originals| 30 |
+| Bolex Variable Shutter | 14 | Hicon Processing        | 30 |
+| Linear Fade            | 14 | Optical Printed Release Prints | 31 |
+| Other Fades            | 14 | Ritual and Art          | 31 |
+:::

README.md

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+# NOTES ON OPTICAL PRINTER TECHNIQUE
+
+Reproduction on the guide written by Dennis Couzin.
+
+### PDF Dependencies
+
+* pandoc
+
+```bash
+bash compile.sh 
+```
+
+### Text extraction dependencies
+
+* Python3.7
+* OpenCV 2
+* Tesseract
+* PIL
+
+```bash
+cd extract
+python3 pdf.py > ../ocr/pdf_output.txt
+python3 ocr.py > ../ocr/tesseract_output.txt
+```

compile.sh

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+#!/bin/bash
+
+mkdir -p pdf
+
+pandoc --css=noopt.css -o pdf/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.pdf NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md

extract/ocr.py

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+#pip install pytesseract PyMuPDF Pillow opencv-python
+
+import fitz
+import io
+from PIL import Image
+import pytesseract
+import cv2
+
+pytesseract.pytesseract.tesseract_cmd = '/usr/bin/tesseract'
+file = "../original/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.pdf"
+  
+pdf_file = fitz.open(file)
+
+for page in pdf_file:
+    pix = page.get_pixmap(dpi=300)
+    filePath = "pages/page-%i.png" % page.number
+    pix.save(filePath)
+    image = cv2.imread(filePath)
+    text = pytesseract.image_to_string(image, lang='eng', config='--psm 6 --oem 3')
+    print(text)

extract/pdf.py

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+#pip install pytesseract PyMuPDF 
+
+import fitz
+import io
+
+file = "../original/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.pdf"
+  
+pdf_file = fitz.open(file)
+
+for page in pdf_file:
+    text =  page.get_text().encode("utf8")
+    print(text.decode("unicode_escape")) 

style.css

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+.centered{
+    margin: 0 auto;
+    display:  block;
+}
+
+.indexTable{
+    color:  red;
+}