You can do a couple things. You can adjust the material properties to increase contrast (reduce ka, boost kd). See this documentation.
What you really need is to adjust the light. I really don't know how to boost the lighting strength other than just stacking lights. Using some local lights might help.
%% Texturemap the globe
% Load Earth image for texture map
cdata = imread(image_file);
% Set image as color data (cdata) property, and set face color to indicate
% a texturemap, which Matlab expects to be in cdata. Turn off the mesh edges.
set(globe, 'FaceColor', 'texturemap', 'CData', cdata, 'FaceAlpha', alpha, 'EdgeColor', 'none');
lighting(gca,'flat');
% adjust material reflectance
material(gca,[0.2 1 0 1 1])
% use multiple lights in the same location
h = gobjects(6,1);
for hk = 1:numel(h)
h(hk) = light('style','infinite','color','w');
end
for az = -50:10:50
for hk = 1:numel(h)
lightangle(h(hk),az,0)
end
pause(.1)
end
This seems like a terribly inelegant solution, but the documentation really feels like a scattered and poorly-crosslinked mess. It's made particularly difficult to search because of the generic function names like "light".
