Moisture damage in hot mix asphalt is one of the major concerns in durability of flexible pavements. Numerous methods were developed to evaluate moisture susceptibility of HMA in last decades. Some of these methods are simpler and less costly (qualitative tests) and some of them are more reliable. In this research, a digital image analysis approach was utilized to convert boiling water test (ASTM D3625) from visual rating to objective evaluation. Digital images captured from mixtures were processed and analyzed to identify the amount of stripping percentages. Some laboratory tests were conducted on specimens prepared from different types of aggregates to compare the stripping percentages obtained from image analysis of the boiling water test and modified Lottman test (AASHTO T283) results. In AASHTO T283 test, in addition to indirect tensile strength, the Dynamic Modulus E * test and the Marshall Stability test were performed; therefore, three criteria including tensile strength ratio (TSR), E * stiffness ratio (ESR) and retained marshall stability (RMS) were used to compare the results of two methods. The dynamic modulus test was conducted in indirect tension mode by assumption of Poisson’s ratio and a linear viscoelastic solution was used for the E * calculation. Findings showed that the results of boiling water test have significant relationship with TSR and ESR. Good correlation was found between three tests; however, the results of boiling test did not show significant relationship with RMS. Keywords Asphalt mixture, Moisture susceptibility, Stripping, Dynamic modulus, Indirect tensile strength, Image analysis