A method and system for identifying existence and occurrence of a contour. The contour presence can be identified by taking a second derivative of a color space (e.g., L*, a*, and b*) value of a rendered image derived utilizing an ICC profile that models behavior of a MFD as a smoothness metric. A moving average filter can be applied to minimize an extraneous peak and trough in the second derivative that can be contributed to noise. The contour can be detected if a filtered second derivative lies outside a given range. The location of the contour can be identified by matching up an input value with corresponding input value of the image. A probability of the contour being visible in a rendered output can be then determined by separately analyzing the color space values. The occurrence and location of contour can be displayed on a user interface to quickly and clearly identify the contour in the image without making physical prints and with minimal human interaction and expenditure.