将ui中的图像与SQL Server数据库Asp.net中保存的图像进行比较，C＃

Question

I had developed an application in Asp.Net which saves image in SQL Server database it fines, but i want a scenario like this When i am trying to save same image again then it should gives me message that the image is duplicate. How to do this? How we can compare a image from UI & SQL database in Asp.net?

please help me friends Thanks

Answer 1

Well, if the image is exactly the same, then you could make a hash of the image object which is saved in a separate column, and check if there are any columns that matches any entries in that column whenever you try to save an image.

If you need to check if the image is similar or just looks the same, then you need more advanced image recognition software..