Adobe Photoshop CC in digital Forensics


Photoshop has become much more than a standard in the computer graphics industry. It is the paradigm of the computer age. Taking a photo, but not editing it afterwards in Photoshop today is considered an unusual gesture, to say the least, and often is seen as a typical expression of computer illiteracy and/or neglect.

In professional photography, Photoshop and similar applications are unavoidable for over a decade.

This indicates that in the picture you see it is difficult to distinguish what is real (unedited), what is only slightly improved in order to be more prominent, and what has changed in order to cover up the flaws.

If you would like to know how the original image looks like, in what way it was changed, when was it changed, and why somebody changed it, you have to apply advanced techniques of image processing. The aim of this course is to teach professionals, amateurs and enthusiasts with skills and knowledge they need to reconstruct the original unaltered image and retrace the process of editing in detail.

On the other hand, this new knowledge can be used to change the part of the picture and protect data that you do not want to be visible to others in order to protect the identity and privacy.

Color and tonal corrections

  • Full-color and tonal corrections (adjustments), in order to obtain the maximum information from an existing image:
  • Commands from the submenu Adjustment and Adjustment Layers:
  • Levels, Contrast, Exposure, Invert, Shadow / Highlights and others, and their possible applications in image editing and image reconstruction.


Retouching damaged files:

  • The basic and advanced principles and workflows,
  • Tools used in retouching.


Use of the filters to selectively edit and protect parts of an image:

  • Use of Blur and Distort filter group in data protection.
  • Using filters for reverse editing of the changed image,
  • Use Sharpen, Liquify, and similar filters for elimination of effects already applied filters,
  • The use of different mathematical methods in the reconstruction of the image.

There are many mathematical methods that are used for image reconstruction, some of them have various applications, and some of them are highly specialized. Some of them come as filters or commands in Photoshop, others are implemented as workflows that eventually lead to image enhancement. We will not discuss them here in detail. If you would like to know more about the methods we use, feel free to contact us.

Additional resources

Use additional tools and resources that are not part of Photoshop for various image analyses:

  • Izitru and various related tools for the detection of image editing.
  • Error level analysis.


The number of hours of the course depends on the level of knowledge of participants. The necessary prerequisite for this course is useful knowledge of the topics covered as part of the basic course of Photoshop. It is not necessary, but it is highly recommended that an attendee is very familiar with advanced Photoshop course described in detail on our website. It is recommended to attend this course after at least 400 working hours in Photoshop.

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