java - Java 的 opencv RNG 替代方案

Question

我使用opencv-3.2.0，我发现RNG可以与C++一起使用，但在Java中不存在:

C++

RNG rng( 0xFFFFFFFF );
rng.uniform( -3, 10 );
rng.uniform(0, 200);

Java

There is no RNG

请告诉我如何在Java中使用RNG制服。

Answer 1

只需在 google 上进行少量搜索，我就找到了这个 link ，在uniform的解释中，它说:

returns uniformly distributed integer random number from [a,b) range. The methods transform the state using the MWC algorithm and return the next uniformly-distributed random number of the specified type, deduced from the input parameter type, from the range [a, b) .

以及示例:

RNG rng;

// always produces 0
double a = rng.uniform(0, 1);

// produces double from [0, 1)
double a1 = rng.uniform((double)0, (double)1);

// produces float from [0, 1)
double b = rng.uniform(0.f, 1.f);

// produces double from [0, 1)
double c = rng.uniform(0., 1.);

// may cause compiler error because of ambiguity:
//  RNG::uniform(0, (int)0.999999)? or RNG::uniform((double)0, 0.99999)?
double d = rng.uniform(0, 0.999999);

所以，看来java也有RNG。