Non-Destructive Image Editing

Part I – The Evolution of Non-Destructive Imaging

1. Define ‘Non Destructive Imaging’

Non Destructive Imageing refers to imaging processes where the source image may be adjusted in

a way that leaves the original data intact

2. List four challenges introduced by digital photography :-
1. Storage space for digital files
2. Keeping up with the latest soft ware
3. Backing up images
4. What type of format to use for your image
3. What is meant by a ‘Derivative File’ ?

You may have a copy or a edit of the original, that is a derivative file because it has been derived from the original

4. What are two problems with using ‘Save As …’ to create derivative files ?
1. Confusion could occur because if saving multiple times to explore different aspects of the image
2. it may create storage problems if saving the same image multiple times
5. What is ‘Self Referenced Non Destructive Imaging’ ?

This term is used for haveing multiple layers on the same image, so instead of changing the image itself you could create layers to work with

6. List two advantages of Self Referenced NDI over the use of Derivative Files :-
1. Its much more ecumenical space wize because the instructions for editing a file take up less room. where the use of the additional derivative file is the size of a normal picture
2. The use of layers to it makes it easier to go back and recorrect mistakes and what not
7. Define ‘Parametric Image Editing’ :- any form of instruction that records information

8. What is the difference between a Live Rendering and a Fixed Rendering ?

Fixed rendering refers to a image that has its information in pixels and dosent need a engine to do what user wishes with the image

9. List three advantages of NDI :-
1. Make changes to a image and not have to worrie about looseing the original file

b. Takes up less space

Exercise 4 – Colour Theory 2

TASK 1. Start Photoshop and open the document you created in Exercise 3. · What is the keyboard shortcut for opening an existing Document ? ctrl+o 2. Change the Blending Mode of the layer Group to ‘Pass Through’. 3. Make the background layer the working layer by selecting it in the Layers palette. 4. Use the Rectangular Marquee tool to select the top half of the image. 5. Use the Paint bucket tool to fill this area with Black. · What is the keyboard shortcut for this tool ? G 6. Change the Blending Mode of the ‘Red Circle’ layer to ‘Lighten’. 7. Do the same for the Blue and Green Circle layers. 8. Select the Move tool. · What is the keyboard shortcut for this tool ? V 9. Turn on the ‘Auto-select’ option and set it to ‘Layer’ (Not ‘Group’). 10. Drag the three circles so they all overlap each other. 11. This simulates the RGB Colour System. 12. Rename the group of circle layers to indicate this. 13. Add a text layer (using white text) saying ‘ Colour System’. 14. Select the group of circles in the layers palette. 15. Duplicate the group using ‘Layer -> Duplicate Group …’. 16. Use the Move tool with ‘Auto-Select’ set to ‘Group’ to drag the new group to the bottom half of the page. 17. Change the Blending Mode of the this group to ‘Difference’. 18. This simulates the CMYK Colour System. 19. Add a text layer saying ‘ Colour System’. 20. Save the document as ‘Ex 4 – Primary_Colours.psd’

Exercise 3 – Colour Theory 1

Tasks

1. Start Photoshop and create a new document with the following properties :- · Name : ‘Ex 3 – Primary Colours’ · Size : A4 @ 300dpi · Colour Mode : RGB / 8 bpc · Background Colour : White 2. What is the keyboard shortcut for creating a new Document ? crtl+N 3. What is the size of the image in :- § Megapixels - Megabytes 24.9 4. Set the foreground colour to Red (ie R 255, G 0, B 0). 5. Select the Ellipse Tool (not the Marquee tool). What is the keyboard shortcut :- U 6. Draw a circle with the Ellipse tool approximately 6cm in diameter (about 1/3rd of the page width) – display the rulers and use Preferences to set the units to cm . · Which key forces the ellipse to be a circle ? hold the shift and drag 7. Change the layer name to ‘Red Circle’. 8. Duplicate the layer and · change the colour to green and · change the name to ‘Green Circle’. Note: To change the colour click on the colour button on the option bar immediately after duplicating the layer, or double click on the layer in the Layers palette. 9. Duplicate this layer and · change the colour to blue and · change the name to ‘Blue Circle’. 10. Select the Move tool. What is the keyboard shortcut ? V 11. Turn on the ‘Auto-select’ option. 12. Spread the three circles across the top of the page with a small space above them (they may overlap a bit – that’s OK). 13. Fit the image to the screen (ie so the whole page is visible). · What is the keyboard shortcut for this ? Z 14. Go to Full Screen Mode – ‘View -> Screen Mode ->Full Screen Mode’. · What is the keyboard shortcut ? I couldn’t find it 15. Stare at the centre of the middle circle for 20 seconds, then look at the white area below. You will see an after image. · What colour are the after images for each circle ? Circle After Image Colour Red blue Green blue Blue green 16. Select all three layers in the layers palette. 17. Group the three layers together by selecting ‘Layer -> Group’. · What is the keyboard shortcut ? ctrl+g 18. Select the group in the layers palette containing the three circles. 19. Change the ‘Blending Mode’ for the group from ‘Pass Through’ to ‘Difference’. (We will be looking at Blending Modes later, so don’t worry if you don’t understand them now). 20. Stare at the centre of the middle circle for 20 seconds, then look at the white area below. You will see an after image. · What colour are the after images for each circle ? Circle After Image Colour Cyan blue Magenta Yellow Yellow green 21. Save the document as ‘Ex 3 – Colour Theory.psd’ 22. What is the size of the .psd file on disk ? its way smaller How does this compare to the image size you recorded in step 3 above.

8 image overlay

this tutorial iv found hard, not as in complicated but its hard to get the images to look nice when blended together. tree and silhouette work best i found

1. have 2 or more images you like open in photoshop

2. use the move tool to take the images off the top bar so thay are floating in the screen and click them image its self and drag it onto the im image you are hoping to blend it with

3. open up the layer menu and and on the right there is a opacity and fill %. for best result i think is around 40% because anthing over stands out to much and anything below dosent stand out enough

Dan Mountford has done some really amazing stuff with this

7 erase tool

1. set the main image you want to stand out and set it as the back ground

2. drag the other images you would like to have pieces of and drag it ontop of you back ground

3. use the back ground erase tool or the regular erase tool (looks like a rubber and is above the gradient tool, that's on cs4 but im not sure about cs5) and go over all the areas of the photo you wouldnt like to be in the main image. make sure tho you are on the image you dragged on top of your back ground

4. and use the pointer cursor and drag the pieces of image around as you please

6 hue and saturation

befor

after

1.first of all create a layer of the back ground by clicking the back ground layer by pressing (ctrl+j)

2. then go to new adjustment layer>hue and saturation do this 5 more times. the quick way is at the bottom on the layer box there is a circle that is half black and half white.

3. when this is done go to the first hue and saturation layer and above the 3 sliders there is a box that says "master" change it from master to "red" and use the first slider to tweak how much hue you would like in the image and the second is how saturated you would like red colour to be and the finial is how bright you would like that colour to be.

tip (when doing this try to remember to try and keep it natural looking as possible because when the colours are over the top and are mega bright its very unappealing)

4. when you happy with the choices you have made go to the hue and saturation layer again and change it from "master" to "yellow" and tweak the sliders again to get the desired effect.

5. when you have done this go threw the diferant hue and saturation layers and work your way threw the colors on each layers.

the reason i did it on each is not because i wanted it to be extremely painful but when changing the hue and saturation on mater you can never get the effect i wanted so i went threw and changed it manually

5 crop and straighten

1 if there is some unsightly poles or tree branches or anything in general obstructing your photo you can crop it out using this tool

2 when you select this tool you have to click and drag it to creates a marching ants marque looking kind of thing. if you are trying to achieve a square simple hold down shift and it creates a perfect square

3 when you have done what you want to the image and you have the desired look all you do is press "enter". if you are a bit unhappy with it you can always go back and try again

4. how to create a water colour effect

1. first you create 3 layers


2.go to image> adjustments > desaturated. this will turn the image BaW


3. than invert the image by using the command (ctrl+i)


4. from there you must change the colour mode on the left hand side to "colour dodge".


5. the image will turn all white and leaving a few lines from shadows, than go to filter>blur>gaussian blur. a window will pop up in the middle of the screen, use the slider to change the effect of detail being left on the image.


6. you will have to download the water colour paint brushes and install the into your photoshop preset brushes file. this is the link for the brushes that i used in my photos


7.a major tip for applying colour, leave a original layer up and make it 20% opacity so you can colour in your black and wight outlines.


TIP: when using the brushes have the brush pallet up so you can move the way thay face so they dont all look the same.

3.how to create a painted effect

1. create 3 of the same layers (ctrl+j)


2. on the first layer go to filter>artistic>cutout


3. there is 3 levels to use number of levels, edge simplicity and edge fidelity . set number of levels to something around 7 and set edge simplicity 3 and edge fidelity to 1 or 2


4. change mode to luminosity


5. now use a new layer and go to filter> artistic >dry brush. make the brush size full and brush detail on full with minimum texture


6. change mode to soft light on the same layer


7. on the 3rd layer go to filter>noise>median and set it on the desired portion. every image i used it was different

2 circular panoramic

1.crate a 360 degree panorama. The use of a fish eye if optimal beacuse the wider you shott the
better the results will be

2.The image has the be square before it goes to the filter so go to image>image size, at the bottom of the window that appeared there is a box that says constraint proportion, un tick the box and resize the pixel demission to 30cmx30cm

3. Flip the image upside down via image>rotate>180 degrees

4.Go to filter>distort>polar cordanates and use the rectangular to polar settings than click ok

5.Ta dah! Your own little world. But sometimes there is an error with stitching the 2 ends together so use the clone tool to fix this fault up

this is another tutorial on how to do it

p://www.youtube.com/watch?v=qzoY92JPvos

1-regular panoramic

i used this basic photoshop tutorial on youtube http://www.youtube.com/watch?v=9_xBypZRYt0&feature=related



1.first of all make sure the images all overlap each other



2.go to file>automate>photomerge



3.when the new box appears, on the left hand side there is a section called layout. tick the top box called "auto" if not done already



4.go into the browsers box on the right hand side of box, select all of the images you where hoping to use for your panorama. selecting them all by the shift key. when this is done click the "ok" button. hopefully all of the images you selected should appear in the middle box



5. under the main section where the photos are, there is 3 boxes. make sure the blend images box is ticked and if the shots where taken using a fish eye than geometric distortion could be a good idea to that or if you used a lens hood or even if the lens leaves vignetting than its another option to tick that box to



7.when this is all done click the ok button and watch the magic happen

8. on my computer this took roughly around 70 seconds to blend 10 images. but i found the more programs you have open the long it takes to do

9.when its all done and the photos are blended together you should end up with a jagged edge panoramic image. use the crop tool ( ctrl+c ) to fix up the edge