Natural Image Enhancement Using a Biogeography Based Optimization Enhanced with Blended Migration Operator

Algorithm 1

for 𝑘=1 : 𝑁

for 𝑗=1 : 𝑚

    if rand < 𝜆_scale

    RanNum = rand * sum(μ);

    Select = μ(1);

    SelectIndex = 1;

    while (RanNum > Select) and (SelectIndex < 𝑁)

      SelectIndex = SelectIndex + 1;

      Select = Select + µ(SelectIndex);

    end

    Habitat_new(𝑘,𝑗) = Habitat_old(SelectIndex, 𝑗)

    else

    Habitat_new(𝑘,𝑗) = Habitat_old(𝑘,𝑗)

    end

end

end