CSC020 Computer Graphics Assignment 2 1

Assignment 2 Resolutions & Colors Please follow all written instructions below, and then reread them before you turn in this assignment. Make a folder called FirstLastResolution for this project, where First and Last are YOUR first and last name. The Folder should contain README, original photos, intermediate photos, and final photos Turn in the ZIP compression of this folder by the due date to your course’s D2L Assignment Submission Folder for Project 2

Assignment 2 Resolutions & Colors There are 2 parts to this exercise: Collect pictures at various resolutions and settings To be done BEFORE next class Manipulate pictures using Curves To be done IN next class

Assignment 2 Resolutions & Colors There are 2 parts to this exercise: Collect pictures a various resolutions and settings To be done BEFORE next class

Assignment 2 FOR CLASS: BRING YOUR CAMERA AND CABLE OR CARD READER FOR PRACTICE IN TAKING AND DOWNLOADING PICTURES USING THE ADOBE BRIDGE. CAPTURE IMAGE FILES TAKEN WITH YOUR CAMERA AS DESCRIBED IN STEPS 1 THROUGH 5 AND UPLOAD IF YOU DO NOT HAVE A CAMERA, YOU CAN: BORROW A CAMERA FROM THE LIBRARY USE YOUR PHONE

Assignment 2 Get a Camera If you do not have access to a digital camera you may be able to borrow one from the Rohrbach Library desk (check with them) – (or maybe a friend?) It will probably be old, but functional. Increasingly, pocket digital cameras do not allow you to set the resolution.

Assignment 2 Using a Phone If you can’t get hold of a camera, you may also use a high- resolution smart phone but you have to do more than just go with auto settings. You need to find ways to customize the image when you capture it. HINT: Some phones do not allow you to change the resolution, but the front & rear facing cameras are usually different resolutions

Assignment 2 Using a Camera (pocket) In such cases the resolution is set to the maximum resolution for the number of sensors (pixels) in the camera. (13mp) If your camera does not allow setting the resolution, then choose some other camera configuration parameter (setting) and experiment with and document THAT setting in your README log. An example would be determining, by trying different “scene” settings and then looking at meta-­‐data in the Bridge, exactly what camera settings change as a function of changing the “scene” setting.

Assignment 2 Step 1 Determine Resolutions 1. Read (Google) the documentation for your digital camera find the various pixel dimensions (resolution) that the camera can capture. HINT: Look at the front & rear facing cameras Document the available resolutions in your README log file.

Assignment 2: Filling in the README My Camera is a: Camera resolutions: Resolution 1 (phone front) Resolution 2 (phone back) Resolution 3, etc Spreadsheet: Resolution, Dimension, focal length (mm), aperture (f?.?), exposure (1/x) the filename is some descriptive name followed by WxH.jpg

Assignment 2 Step 2a Capture at least one JPEG file at each resolution of a single scene. Keep the scene consistent Similar to the “books” example presented in Class See Books.zip…

Assignment 2: Filling in the README My Camera is a: Camera resolutions: Resolution 1 (front) Resolution 2 (back) Resolution 3, etc Name of Picture at Resolution 1: (img20160908) Name of Picture at Resolution 2: etc.

Assignment 2 Step 2b 2. When you save these files in your folder: Save as JPEG (this is probably how its save on a phone) the filename is some descriptive name followed by WxH.jpg where W is the JPEG width in pixels H is the JPEG height. For example, campus3264x2448.jpg. The photo files must be of different pixel dimensions (resolution).

Assignment 2: Filling in the README My Camera is a: Camera resolutions: Resolution 1 (front) Resolution 2 (back) Resolution 3, etc Name of Picture at Resolution 1: (img20160908) Name of Picture at Resolution 2: Picture 1 is saved as campus3264x2448.jpg Picture 2 is saved as campus640x480.jpg

Assignment 2, Step 3 3. Find some feature that is common in both JPEG files that shows up more clearly in the higher resolution shot according to the pixel dimensions or obvious visual clarity of that feature in the higher resolution photo compared to the other. Outline in your README log file how to find the feature and how you determined that it is sharper in the higher resolution photo.

Assignment 2: Filling in the README My Camera is a: Camera resolutions: Resolution 1 (front) Resolution 2 (back) Resolution 3, etc Name of Picture at Resolution 1: (img20160908) Name of Picture at Resolution 2: Picture 1 is saved as campus3264x2448.jpg Picture 2 is saved as campus640x480.jpg The tree’s leaves in the upper right hand corner are……..

Assignment 2: Filling in the README My Camera is a: Camera resolutions: Name of Picture at Resolution 1: (img20160908) Name of Picture at Resolution 2: Picture 1 is saved as campus3264x2448.jpg Picture 2 is saved as campus640x480.jpg The tree’s leaves in the upper right hand corner are…….. Digital Zoom:

Assignment 2, Step 4 4. Determine whether your camera has optical zoom and whether it has digital zoom. If it has optical zoom capture one JPEG shot of some scene (possibly a different scene) zoomed out (lowest possibly focal length), and another at maximum optical zoom in (largest optical focal length). If you DON’T have optical zoom, just mimic it by moving closer or farther away (like in the “books” example) If the camera has digital zoom take a third shot with that as well. Save these two or three JPEG files in your folder with names indicating the scene and focal length, for example creek50mm.jpg.

Assignment 2, Step 5 5. Capture a scene with at least moderately high contrast in light levels and colors. You may have to wait for a sunny day or go indoors for this step.

Assignment 2 Resolutions & Colors There are 2 parts to this exercise: Manipulate pictures using Curves To be done IN next class

Assignment 2, Step 5 In addition to your original photo, you will save two Photoshop files, one processed to highlight natural colors similar to my fieldcolorboost.psd (You would lose some points for artificial artifacts in this one), and one processed to create an artificial environment similar to my fieldcolortwist.psd. This latter one earns the 10% where you should experiment with Color Curves capabilities. Document your steps in README file. See additional instructions below.

Assignment 2, Step 5 Highlight Natural Colors The image or images to which you apply Image-> Adjust -> Curves must have two areas that you transform for step 5. #1 The first area must be an area high in some color that is surrounded by an area low in that color. You must subtract this color in the high-color area without noticeably affecting the surrounding, low color area. This corresponds to the section “SUBTRACTING BLUE WITHOUT AFFECTING THE BORDERING LOW-BLUE AREA” in Slides

Assignment 2, Step 5 Highlight Natural Colors #2 The second area must be an area low in some color that is surrounded by an area high in that color. You must add this color in the low-color area without noticeably affecting the surrounding, high color area. This corresponds to the section “ADDING RED WITHOUT AFFECTING THE INTERLACED MEDIUM RED AREA.” You must do both forms of color processing using Image -> Adjust -> Curves, and you must log instructions for the steps you take in your README file. Both these editing steps and writing this log are important to this assignment.

Assignment 2, Step 6 If you vary camera settings across more than two images, for example pixel resolution for one pair of images, optical zoom for a second pair, and JPEG compression (file size) for a third, make sure to record meta-data for all of these images in your README file. “Two” is a minimum. Make sure to mention which camera setting changes resulted in which meta-data changes in the README file.

Assignment 2, Step 6 6. Using the Abobe Bridge, find the metadata for two of the above JPEG files, including aperture, shutter speed, ISO number (“film speed”), and focal length. In your README log file document all of these parameters and any additional metadata that you find for two of the JPEG files that you captured above.