Use Gaussian blur dynamic effect when the picture enters the processing

[wibus-wee]

Clear and concise description of the problem

Use Gaussian blur dynamic effect when the picture enters the processing.

Suggested solution

Enter the processing process, Gaussian blur the picture, and cancel the blur after processing is completed.

Use smooth transition in the process.

Alternative

No response

Additional context

No response

Validations

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• Read the Contributing Guide.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.