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Automatic lung disease detection is a critical challenging task for researchers because of the noise signals getting included into creative signals amid the image capturing process which may corrupt the cancer image quality thusly bringing about the debased performance. So as to evade this, Lung cancer preprocessing has turned into an imperative stage with the key parts as edge detection, lung image resampling, lung image upgrade and image denoising for improving the nature of input image. Image Denoising is a critical pre-processing task preceding further preparing of the image like feature extraction, segmentation, surface examination, and so forth which elminates the noise whereas retaining the edges and additional complete features to the extent possible. This paper deals with improvement of the quality of lung image and diagnosis of lung cancer by reducing misclassification. The lung CT images are …