java - Use mean hash algorithm to generate image fingerprint. Called multiple times, the returned information is actually inconsistent.

Question

http://blog.csdn.net/10km/art...

First time
1111111111111011
1111111111110011
1111111111000011
0000000000000000
0000000000000000
0000000000000000
000 0000000000000
0000000000000000
0000000000000000
0000000000000000
00000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000
0000000000000000

Second time
1111111111111111
1111111111111111
11111111111111111
1111111111111111
1111111111111111
11111111111111111
11 11111111111111
1111111111111111
1111111111111111
1111111111111111
11111111111111111
1111111111111111
1111111111111111
1111111111111111
1111111111111111
11111111111111111

urgent! ! !

http://n1.itc.cn/img8/wb/list...
{"status":1,"imgFingerPrint":"8000800080008000800080008000800080008000800080008000000080008000"}
http://n1.itc. cn/img8/wb/list...
{"status":1,"imgFingerPrint":"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}
Some pictures have different results every time they are called, and finally they are all F

Answer 1

Incomplete download of online picture content

Change to:
byte[] btImg = IOUtils.toByteArray(inStream);

The result is normal