In this tutorial, you’re going to learn how to use Photoshop and Picasa as a tool for post-production. The practice of post-production is important to all visualizer which deserve an in-depth study and analysis. Some would say that rendering using different photorealistic ‘render engine’ is enough in order to come-up with a convincingly realistic photo. However, whatever you do, don't stop there! There are some important things you need to do to your raw render image before it's worthy of your portfolio. The primary functions of photo editing softwares such as Photoshop, Picasa, Gimp etc. are usually to correct color, to adjust light intensity, to insert entourage, to make bump map material and many more that enables you to create your own compositional style.
The real deal in achieving such photorealistic image is through detailed modelling with proper application of texture and material settings.
STEP 1: Using the SketchUp program, make a detailed 3D shipping container with 8x40 feet in size or you can download any available model(s) in 3Dwarehouse site that correspond to the specification if available.
STEP 2: Make a copy of the shipping container model> Place it on top of the other model> Insert 3D sliding doors and windows to your model.
|STEP 3: Add some details to your container house model: roof, railings, balcony, deck, stairs etc.|
STEP 4: Click on the ‘Paint Bucket’ tool icon> Choose any applicable textures from the ‘materials pallet’> Click on the face to apply the texture.
|STEP 5: Insert 3D entourage in the scene|
STEP 6: After finding your preferred perspective view. Save your scene: view> animation> add scene. Creating a scene in SketchUp enables you to capture a state of model, thus you can go back to the same view and settings when needed.
STEP 1: Apply the following Vismat (V-Ray) materials to your model:
(a) Metal car paint/ Container metal paint
Car paint reflection settings
Car paint red color 1
Car paint red color 2
Car paint green color 1
Car paint green color 2
(b) Window glass
Under ‘options’, check ‘trace refraction’
Reflection and Diffuse settings
Diffuse: Old white wood 200cmx10cm #014
Diffuse and Maps settings
STEP 2: All V-Ray settings should be set in default mode, except for the output setting. Under V-Ray option editor, adjust the output setting to 1600X1200 resolutions. When you’re done, click the render button ‘R’.
STEP 3: Save the following images:
Raw rendered image
Note: Alpha channel or mask render is a black-and-white representation of all the outlines from the scene. We will be using this image during the post-production, specifically when we need to replace the background of a scene
STEP 1: Open the last saved images in Photoshop. The ‘raw rendered image or the main scene’ will serve as the background layer. Place the ‘alpha channel image’ in layer 1.
Note: Technically, any scenery photo you find in the internet can be used as a background element. However, you need to choose photos that match the lighting conditions and proportionality of your rendered 3D scene.
STEP 5: Insert grass landscape in Layer 3. Roughly, erase the upper portion of the image using the eraser tool.
STEP 8: Select each layer that is set in multiply mode, roughly erase the portion you don’t want to be affected by the masking effect or shadows. Result so far.
STEP 9: Add vines or creeping plant image in the scene> set the blend mode to ‘Lighter color’
STEP 10: Save your work in JPEG or PNG format. Result so far
STEP 11: In order to blend all the entourage to the main scene (raw render image), adjust the ‘color balance’ and ‘saturation’ settings. Open the last saved image and follow the settings.
STEP 12: When done, save your work in JPEG or PNG format. Result so far
STEP 13: Open your last saved image in Picasa. Follow the workflow for Picasa: (1) Orton mode> (2) Glow effect> (3) Color temperature> (4) Click ‘Save as’ and save your work in JPEG or PNG format.
RAW RENDERED IMAGE VS POST-PROCESSED IMAGE
FINAL RENDER OUTPUT
|CONTAINER HOUSE (.skp file)|
To download click HERE