roadmap arguments specified

ROADMAP.md

@@ -4,6 +4,8 @@ Recoding in 5 python modules
 - Less platform dependent implementation
 - Higher versality (wrt addition of new intput / output file tytes)
 
+The functionality of each module is described below:
+
 Normalize inputs (inputs can be a pdf file, an image, a folder containing images)
 ----------------
 
@@ -28,7 +30,10 @@ Preprocess normalized inputs (perform jobs in parallel)
   - Correct skew angle
 - Cleaning (if requested by user)
   - Clean image
- Perform OCR (perform jobs in parallel)
+
+Perform OCR (perform jobs in parallel)
+-----------
+
 - Perform OCR and save resulting hocr file for each respective page (perfom jobs in parallel)
 
 Generate output for each page
@@ -46,13 +51,39 @@ Build final output
   - Verify conformity to pdf/1-a
     
 
-    
-New temp folder structure
+Tmp folder structure
 =========================
 
-  - tmp_xxxxx/
-    - a_raw_images (either from images or extracted from pdf file)
-    - b_preprocessed_images (after deswing anf cleaning)
-    - c_hocr_files
-    - d_output_pages (one file per page (at first 1 pdf file per page. Later on other formats might be supported)
-    - e_final_output (concatenate output pages and conversion into PDF/1-a standard, Later on support other formats)
+- tmp_xxxxx/
+  - a_raw_images (either from images or extracted from pdf file)
+  - b_preprocessed_images (after deswing anf cleaning)
+  - c_ocr_out
+  - d_output_pages (one file per page (at first 1 pdf file per page. Later on other formats might be supported)
+  - e_output_final (concatenate output pages and conversion into PDF/1-a standard, Later on support other formats)
+
+ocrmypdf arguments
+==================
+
+- Overall parameters
+  - [-h] : Display this help message
+  - [-v] : Increase the verbosity (this option can be used more than once) (e.g. -vvv)
+  - [-k] : Do not delete the temporary files
+  - [-g] : Activate debug mode (max verbosity, keep tmp files, generate debug pages)
+- Nomalization parameters:
+  - [-o dpi] : If page resolution is lower x dpi, provide OCR engine with an oversampled image. (Can improve OCR results)
+  - [-f] : Force to OCR the whole document, even if some page already contain font data
+  - [-s] : If pages contain font data, do not OCR that page, but include the page (as is) in the final output.
+- Prepocessing parameters:
+  - [-r] : Correct orientation before performing OCR
+  - [-d] : Deskew each page before performing OCR
+  - [-c] : Clean each page before performing OCR
+  - [-i] : Incorporate cleaned image in final output
+- OCR parameters:
+  - [-l lan1[+lan2...] : Document language(s). Multiple languages may be specified, separated by '+' characters.
+  - [-C cfg] : Pass an additional cofg file to the tesseract OCR engine. (this option can be used more than once)
+- output generation parameters:
+  - None by now
+- input files:
+  - inputpath : path to image, pdf file or folder to be processed
+- output files:
+  - outputfile1 [outputfile2 ...] : *.pdf file or *.txt file to be generated (this argumente can be repeated if both pdf and txt file should be generated