Image restoration

The term ‘image restoration’ refers to techniques used to digitally rectify known, measured or accurately surmised degradations of images, for example historic photographs, sketches and paintings. Image restoration differs from image enhancement in that its purpose is to restore the image back to its original, undamaged state, whereas image enhancement concentrates on making the image more aesthetically pleasing, and not necessarily realistic.

Contrast, brightness, resolution, sharpness and colour can be adjusted, to enhance the image’s clarity. Damaged areas, such as tears and cracks, can be fixed seamlessly, and missing portions of the image can be replaced.

Noise, such as dust or scratches, can be removed. Camera misfocus and motion blur can be reversed, by a process called ‘inverse filtering’, although if any noise is present, performing inverse filtering can actually have a detrimental effect on image quality as it amplifies the noise. Wiener filtering combines both inverse filtering and noise reduction.

Related methods include: Image enhancement and Photography.

tool: Adobe Photoshop

Adobe Photoshop is an editor for still images. It is equipped with a diverse range of processing tools, enabling users to create or modify content through the use of drawing tools, filters, or other plug-ins.
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Methods relating to this toolCategory
2d graphic designPractice-led research
2d illustrationPractice-led research
2d modelling - rasterData structuring and enhancement
2d modelling - vectorData structuring and enhancement
2d scanning and photographyData capture
3d graphic designPractice-led research
3d modelling - interactiveData structuring and enhancement
3d modelling - vectorData structuring and enhancement
3d modelling - vectorPractice-led research
3d scanningPractice-led research
Graphical interaction (asynchronous)Communication and collaboration
Graphical renderingData structuring and enhancement
Image enhancementData structuring and enhancement
Image feature measurementData analysis
Image manipulationPractice-led research
Image restorationData structuring and enhancement
Image segmentationData analysis
PhotogrammetryData structuring and enhancement
PhotographyPractice-led research
PhotomontagePractice-led research
VisualisationData analysis
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Alternate tool(s):

GraphicConverter, 36-image converter

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