Development of software for comparing images of different formats

Development of software for comparing files Original layout, Installation with Jpg.
Terms used in the description of TK
Trapping is used at the prepress stage of the printing process (in the manufacture of a layout) to mask the defects of registration. It consists in thickening the contours of plaques by a certain amount to prevent the formation of gaps at the junction of two areas of different colors due to the non-combination of colors with multicolor printing.
Overprint – the imposition of one color element on another without creating a turnout in the process of electronic mounting of colored material at the prepress stage of the printing process.
Artboard - sizes of installation areas, reflected in the application "Original layout".

What is the Software (hereinafter referred to as the Software) developed for?
Software is being developed to track changes made to input files (supported formats are described further in the TK), after processing it by the prepress department.
General requirements.
It is necessary to develop an application with a graphical shell for comparing files (images) of different formats, sizes, with the construction of a report containing information about the differences identified and highlighting elements / colors in the image (file) that do not correspond to one of the files (difference between files).
Supported file types.
The annex shall support the following formats:
- .len?
-*.pdf.
-*.jpg (RGB);
-*.CDR;
-AI?
-*.DOC, *.DOCX, *.RTF (MS Office)
-*.XML.
File formats for comparison:
The software should allow comparison of different formats, for example:
- *.len ->*.jpg (RGB)
- *.pdf ->*.jpg (RGB)
- .len - .pdf
- .CDR-> .pdf
- .Ai-> .pdf
Maximum file sizes
- Pdf max 600Mb
- Len max 2Gb
- Jpg max 200Mb
- Cdr max 500Mb
- Ai max 1Gb
Methods and algorithms for checking files
- Pixel Comparison of Files (for Image Comparison)
- Method of checking the text block by words, spellings, fonts (comparison of text).
- Overprint method of checking
- Trepping test method.
Supported spelling-checking languages
- Russian.
- English.



Sequence of steps of file verification
(1) Verification of OM verification files
- Checking text blocks
- File check (comparison) *.pdf ->*.jpg (RGB), *.CDR->*.pdf, *.AI->*.pdf for differences in elements,
- Trapping and overprint check.
- Verification of the parameters of the size of artboard (mounting areas) with the dimensions obtained through the XML file from the external program 1C.
(2) Verification of installation files
- File check (comparison with copies of OM)*.pdf ->*.jpg (RGB), *.len ->*.jpg (RGB), *.len ->*.pdf for difference in elements
- Trapping and overprint check.
- Verification of the parameters of the size of artboard (mounting areas) with the dimensions obtained through the XML file from the external program 1C.
Building a report and highlighting discrepancies in the elements and colors of the image.
The report should be made in a separate window, with a sequential description, it should contain information about the differences found between the compared files, and it should be possible to save it in XML format.
When there is a difference in files (images or test blocks), the area in the image should be highlighted and highlighted by the outline.
Functionality available through the Graphical Interface.
1) Zoom (increased decrease) is supported when viewing files (separately file or compared files)
(2) Moving through files or images is supported.
(3) File overlay.
(4) The choice of verification method is supported. (OM or mounting).

Supported platforms.
1) Windows xp/7/8/10
Requirement for the software being developed.
(1) The software being developed shall be accompanied by a technical description of the entire code.
2) Listing of the software code.
(3) User and administrator instructions.
4) The software developed supports work with external NAS storage (opening, saving files over the network).
(5) The software being developed shall not contain a limit on the number of users.
(6) The ability to run multiple copies of the software being developed simultaneously.
(7) Preferred programming languages: C++, java.
(8) Possibility of further software development and connection of additional modules.