我能够使用Matlab拍摄图像并在其上叠加热图。
我遇到的问题是，图例上的颜色编码与地图上显示的值不匹配。
如果您在1512x1080的图像上运行以下代码，您会注意到代码中使用的值与图例上指定的值不对应。
作为一个例子，当考虑像素位置700,400中的点时，人们会期望显示红色，因为其对应的值是0.3但是，在生成的图像中，该点的颜色是蓝黄色。
为什么会这样，我该如何纠正呢？
代码如下：
%Import an image***********************************************
%Ask a user to import the image they want
%**************************************************************
%The commented out line will not show the file type when prompted to select
%an image
%[fn,pn] = uigetfile({'*.TIFF,*.jpg,*.JPG,*.jpeg,*.bmp','Image files'}, 'Select an image');
%This line will select any file type, want to restrict in future
[fn,pn] = uigetfile({'*.*','Image files'}, 'Select an image');
importedImage = imread(fullfile(pn,fn));
%Setting up the color map to use
ax = gca;
load('MyColormaps','mycmap');
colormap(ax,mycmap);
%Create size for heat map**************************************
%Setting the size for the map, see comments below
%**************************************************************
%What if I wanted an arbitrary dimension
%Or better yet, get the dimensions from the imported file
heatMap = zeros(1080,1512);
%Manually placing the heatmap values along a grid
%Want to set zones for this, maybe plot out in excel and use the cells to
%define the image size?
heatMap(84,328) = .38;
heatMap(132,385) = .42;
heatMap(86,418) = .40;
heatMap(405,340) = .60;
heatMap(263,515) = .35;
heatMap(480,627) = .40;
heatMap(673,800) = .28;
heatMap(598,892) = .38;
heatMap(540,1020) = .33;
heatMap(684,1145) = .38;
heatMap(275,912) = .44;
heatMap(185,798) = .54;
heatMap(700,400) = .3; %This is a testing point, not an actual value
%Generate the Map**********************************************
%Making the density and heat map
%**************************************************************
%Testing different filtering types
gaussiankernel = fspecial('gaussian', [350 350], 25);
%gaussiankernel = fspecial('average', [50 50]);
density = imfilter(heatMap, gaussiankernel, 'replicate');
%imshow(density, []);
oMask = heatmap_overlay(importedImage, density);
set(figure(1), 'Position', [0 0 1512 1080]);
imshow(oMask,[]);
colormap(mycmap);
colorbar;
我使用Matlab中的UI制作了自定义图例 我不知道如何获取代码，它显示为64x3双 数组如下所示（对不起，我不知道如何在这里制作表格）
0.00196078442968428 0.00196078442968428 1
0.107223942875862 0.00196078442968428 1
0.212487101554871 0.00196078442968428 1
0.317750245332718 0.00196078442968428 1
0.423013418912888 0.00196078442968428 1
0.528276562690735 0.00196078442968428 1
0.633539736270905 0.00196078442968428 1
0.738802909851074 0.00196078442968428 1
0.844066023826599 0.00196078442968428 1
0.949329197406769 0.00196078442968428 1
1 0.00196078442968428 0.949329197406769
1 0.00196078442968428 0.844066023826599
1 0.00196078442968428 0.738802909851074
1 0.00196078442968428 0.633539736270905
1 0.00196078442968428 0.528276562690735
1 0.00196078442968428 0.423013418912888
1 0.00196078442968428 0.317750245332718
1 0.00196078442968428 0.212487101554871
1 0.00196078442968428 0.107223942875862
1 0.00196078442968428 0.00196078442968428
1 0.0575163401663303 0.00196078442968428
1 0.113071896135807 0.00196078442968428
1 0.168627455830574 0.00196078442968428
1 0.224183008074760 0.00196078442968428
1 0.279738575220108 0.00196078442968428
1 0.335294127464294 0.00196078442968428
1 0.390849679708481 0.00196078442968428
1 0.446405231952667 0.00196078442968428
1 0.501960813999176 0.00196078442968428
1 0.557516336441040 0.00196078442968428
1 0.613071918487549 0.00196078442968428
1 0.668627440929413 0.00196078442968428
1 0.724183022975922 0.00196078442968428
1 0.779738545417786 0.00196078442968428
1 0.835294127464294 0.00196078442968428
1 0.890849649906158 0.00196078442968428
1 0.946405231952667 0.00196078442968428
1 1 0.00196078442968428
0.911051690578461 1 0.00196078442968428
0.820142626762390 1 0.00196078442968428
0.729233503341675 1 0.00196078442968428
0.638324439525604 1 0.00196078442968428
0.547415316104889 1 0.00196078442968428
0.456506252288818 1 0.00196078442968428
0.365597158670425 1 0.00196078442968428
0.274688065052032 1 0.00196078442968428
0.183778971433640 1 0.00196078442968428
0.0928698778152466 1 0.00196078442968428
0.00196078442968428 1 0.00196078442968428
0.00196078442968428 0.968496739864349 0.00196078442968428
0.00196078442968428 0.935032665729523 0.00196078442968428
0.00196078442968428 0.901568651199341 0.00196078442968428
0.00196078442968428 0.868104577064514 0.00196078442968428
0.00196078442968428 0.834640502929688 0.00196078442968428
0.00196078442968428 0.801176488399506 0.00196078442968428
0.00196078442968428 0.767712414264679 0.00196078442968428
0.00196078442968428 0.734248340129852 0.00196078442968428
0.00196078442968428 0.700784325599670 0.00196078442968428
0.00196078442968428 0.667320251464844 0.00196078442968428
0.00196078442968428 0.633856236934662 0.00196078442968428
0.00196078442968428 0.600392162799835 0.00196078442968428
0.00196078442968428 0.566928088665009 0.00196078442968428
0.00196078442968428 0.533464074134827 0.00196078442968428
0.00196078442968428 0.500000000000000 0.00196078442968428
我使用的功能是在GitHub上找到的。 链接指向如下：
https://github.com/sergeyk/vislab/blob/master/matlab/gbvs/util/heatmap_overlay.m