JPEG Artifacts and digital noise are both side effects of digital photography that can have negative affects on your photos such as:

  • reducing image quality
  • diminishing image detail and sharpness
  • color cast
  • color degradation

Compression artifacts are different than digital noise and are caused by different processes involved with the capturing and saving of an image. So, each will exhibit different characteristics in your images.

JPEG Artifacts

JPEG artifact sare caused by compression when an image is saved in the .jpg format. Each time an image is saved in this format it is compressed and “non-essential” data is discarded. The result of compression is that an image can suffer from blockiness, mosquito noise (around edges) and color degradation. See more…

Digital Noise

Digital noise (similar to grain) is side effect of shooting – caused by digital cameras. The presence and amount of noise can increase depending on your shooting conditions: lighting, shutter speed and ISO. Noise appears as unwanted dots, lines and smudges of color within your image. Noise the detail and sharpness of an image – it can even affect image color.

Regular noise reduction software doesn’t work well for tackling JPEG compression problems and vice versa. The technology in Topaz DeJPEG, on the other hand, was specifically built with JPEG compression in mind, and is the theoretically optimal way to fix JPEG photos – the same is true for removing digital noise with DeNoise.

Removing JPEG Compression Artifacts
Topaz DeJPEG provides unparalleled JPEG enhancement features and combines them with powerful artifact recognition capabilities – giving you ultimate control over the quality of your JPEG image. The newest version of DeJPEG offers unique new features including rapid processing speeds, noise suppression tools, incredible detail preservation, and multiple color views that work together to make your JPEG images look great.

On the other hand, while Topaz DeJPEG offers some noise suppression features, they are not as powerful as the specialized functionality available in Topaz DeNoise. An image that has strong JPEG artifacting will have the best results with Topaz DeJPEG, while an image with regular ISO noise experiences the best results with Topaz DeNoise.

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