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[Applause] hello everyone this is mr know today i will show you one tool called photo forensics using this tool you can identify all the images in which there are some modification made to that photo after taking the photo that will include enhancements made to this photo touch-ups or any changes in the photo so i will show you how it works so let me go to some of the examples so you can upload any photo here to find out whether a photo is actually true or not there are multiple level of analysis one is known as error level analysis is an algorithm that evaluates the error level potential of a jpeg image and in the back itamp;#39;s a lossy image format so every receives decrease the picture quality the amount of degradation varies based on the number of saves the first sieve losses a lot the second save a little more and by 20th save it is probably as low quality as it will ever get so based on this we can identify various quality so let me show you some of these images with the follo