What is dirt in image processing?

In image processing, "dirt" refers to unwanted artifacts or noise present in an image that can degrade its quality. This can include specks, scratches, or other irregularities that obscure details and affect the overall visual fidelity. Techniques such as filtering, morphological operations, and image restoration are often employed to remove or reduce the impact of dirt in images. Proper handling of dirt is crucial for improving the accuracy of image analysis and enhancing the aesthetic quality of visual content.