- Wed Mar 20, 2013 9:48 pm
#366071
Hello,
Spanish Competition Deadline on April 29, 2013
I have just saw the anounce, http://www.maxwellrender.com/ and wondered which is the best way to achieve reflections and shadows on the ground shown in the HDR image. http://www.maxwellrender.com/gallery/ma ... ompetition
1) Light Source:
I tried the HDR images as background and as lighting sources, this will guarantee the lighting consistency between the rendered object and the background or the ambience.
2) Shadows on the Ground:
I assume (but never tried) that we should use a shadow channel to achieve the shadows on the floor. Previously it is necesary to match the sun angle / position to the sun in the image.
3) Reflections on the Ground:
I really have no idea how to make an object to be reflected in the floor that is shown in the HDR image.
4) Reflections on the ground stored in the HDRI vs reflections Produced by the model:
I assume there will be a conflict, between both reflections, that should be solved.
My main concern is that all the scenes are backlighted,
so we can see (in the images) reflections in the ground, which should or not, be blocked partially deppending on the object that will be rendered in the scene, but that seems to be impossible since the reflections are stored in the HDR image. Additionally if the model contains lightsources, they would have to produce new reflections, which should be consistent with the material caracteristics represented in the HDR images. That seems to be the main challenge...
Thanks in advance!
Ernesto
Spanish Competition Deadline on April 29, 2013
I have just saw the anounce, http://www.maxwellrender.com/ and wondered which is the best way to achieve reflections and shadows on the ground shown in the HDR image. http://www.maxwellrender.com/gallery/ma ... ompetition
1) Light Source:
I tried the HDR images as background and as lighting sources, this will guarantee the lighting consistency between the rendered object and the background or the ambience.
2) Shadows on the Ground:
I assume (but never tried) that we should use a shadow channel to achieve the shadows on the floor. Previously it is necesary to match the sun angle / position to the sun in the image.
3) Reflections on the Ground:
I really have no idea how to make an object to be reflected in the floor that is shown in the HDR image.
4) Reflections on the ground stored in the HDRI vs reflections Produced by the model:
I assume there will be a conflict, between both reflections, that should be solved.
My main concern is that all the scenes are backlighted,
so we can see (in the images) reflections in the ground, which should or not, be blocked partially deppending on the object that will be rendered in the scene, but that seems to be impossible since the reflections are stored in the HDR image. Additionally if the model contains lightsources, they would have to produce new reflections, which should be consistent with the material caracteristics represented in the HDR images. That seems to be the main challenge...
Thanks in advance!
Ernesto