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多聚焦图像融合就是将多幅已经配准的、成像条件相同而且关于同一场景的不同焦点图像,融合成一幅各处都清晰的图像。对于可见光成像系统来讲,由于光学镜头的焦距有限,很难将场景中的所有目标都成像清晰,这一问题可以通过采用多聚焦图像融合技术来解决。该技术能够有效地提高图像信息的利用率和系统对目标探测识别的可靠性。这些优点使该技术正日益广泛地应用于机器视觉、数码相机、目标识别等领域。
function J = ChannelNorm(I,r)
% function ChannelNorm.m
% -------------------------------------------------------------------------
% This function normalizes the image I to a required range using a
% non-linear transformation
%
% Inputs:
% I = the image (two dimensional array, e.g. an image in grayscale
% representation or one channel in a multi-channel image
% in RGB or YCbCr representaion)
% r = a vector with two elements representing the minimum and
% maximum values of the range onto which the image range has to
% be projected; r = [minimum_value maximum_value];
% Output:
% J = the image I projected to the desired range r
%
% Written by : Sujoy Paul, Jadavpur University, 2014
% At : University of Victoria, Canada
%
% Modified by: Ioana Sevcenco, University of Victoria, Canada
%
% Last updated: November 19, 2014
Ran = range(r);
L = range(I(:));
gam = log(Ran)/log(L);
J = Ran*((I-min(I(:)))./(L)).^gam+r(1);
end
[1]Gu Bo, 古博, Lai Zuo-mei,等. 梯度域多曝光图像融合[C]// 中国航空学会信息融合分会. 中国航空学会信息融合分会, 2018:6.
[2]古博. 梯度域多曝光图像融合[J]. 电讯技术, 2018, v.58;No.354(05):89-94.
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