Rasterization Process in Photoshop

Information about Rasterization Process in Photoshop

Published on September 26, 2016

Author: instituteadmec

Source: authorstream.com

Content

slide 1: Rasterization in Photoshop ADMEC MULTIMEDIA Leader in Animation Digital Media Education ISO 9001:2008 CERTIFIED www.admecindia.co.in slide 2: Submitted By-Sargam Jain slide 3: What does it mean to rasterize a layer in Photoshop • By default shapes and text are created on a type of layer called a vector layer. • No matter how much we zoom in on a vector layer the edges always remain perfectly crisp. slide 4: When you rasterize a vector layer Photoshop converts the layer to pixels. slide 5: You might not notice a change at first but when you zoom in on a newly rasterized layer you will see that the edges are now made up of tiny squares called pixels. slide 6: Why does Photoshop tell me I need to rasterize a layer • Certain tools like the brush tools eraser paint bucket fill and filters only work on rasterized layers. • In order to use one of these tools on a vector layer the layer must first be converted to pixels. slide 8: Be aware: when you convert a vector layer to pixels it loses its vector functionality • Shapes and text can no longer be scaled to any size without some loss of quality. • Text is no longer editable meaning you can not change the words or the font. slide 9: So should I rasterize my layer At a certain point in our project we might need to rasterize a vector layer to use the tool or get the edit that you want. slide 11: Before you rasterize a vector layer always duplicate it by choosing Layer Duplicate. Then rasterize the copy. This preserves the original vector layer if you need to go back and make changes later. slide 12: Are there alternatives to rasterization Instead of rasterizing to paint or draw directly on a vector layer create an empty layer above the vector layer then use any of the painting or drawing tools on the new layer. slide 13: • Click the New Layer icon in the Layers panel and then use the Brush Tool to paint on the new layer. slide 14: Tip: To constrain the paint to the edges of the shape first use the Magic Wand Tool to make a selection of the shape then paint or draw inside the selection. slide 15: 2. Instead of rasterizing to use the Paint Bucket Tool to change the fill color of a shape or text change the fill directly from the vector tools properties. For shapes select the vector layer in the Layers panel. Then open the Properties panelWindow Properties. Change the color using the color picker. For text double-click the T icon in the Layers panel to highlight all of the text. Then open the Character panel Window Character. Change the color using the color picker slide 17: 3. Instead of rasterizing to use the Eraser Tool to hide parts of a vector layer use a Layer Mask instead. First select the vector layer in the Layers Panel. Then click the Layer Mask icon to add a layer mask to the vector object. slide 19: Now use the Brush Tool to paint with black on the layer mask. Painting with black will conceal those parts of the layer. Painting with white will reveal those parts of the layer. slide 20: Rasterize layers We cannot use the painting tools or filters on layers that contain vector data such as type layers shape layers vector masks or Smart Objects and generated data such as fill layers. However we can rasterize these layers to convert their contents into a flat raster image. slide 21: Select the layers you want to rasterize choose Layer Rasterize and then choose an option from the submenu: • Type: Rasterizes the type on a type layer. It does not rasterize any other vector data on the layer. • Shape: Rasterizes a shape layer. • Fill Content: Rasterizes the fill of a shape layer leaving the vector mask. • Vector Mask: Rasterizes the vector mask on a layer turning it into a layer mask. • Smart Object: Converts a Smart Object into a raster layer. slide 22: • Video: Rasterizes the current video frame to an image layer. • 3D Extended only: Rasterizes the current view of 3D data into a flat raster layer. • Layer: Rasterizes all vector data on the selected layers. • All Layers: Rasterizes all layers that contain vector and generated data. Note: To rasterize linked layers select a linked layer choose Layer Select Linked Layers and then rasterize the selected layers. slide 23: How to Rasterize Text in Photoshop 1. Using the type tool type any word phrase or paragraph on a new document. slide 24: 2. Right click over the type layer. Select rasterize type. Because the rasterized type is now a graphic you can now manipulate it by applying filters or brushes on it. Thus the following steps are different techniques on how the rasterized type can be used. slide 25: 3. Start by applying a faded effect on the text. To do so go to your Eraser Tool and select the Stencil Sponge-Wet Brush. Erase some parts of the graphic with the eraser slide 26: 4. Add a background on the graphic using any color you like. Create a new layer by typing in Shift + Ctrl + N and then fill the layer with any color using the bucket tool. This can also be done by typing in Ctrl + Backspace. However if you do this make sure that your selected color is set as the background color. slide 27: 5. Finally apply two techniques by following these steps: • Duplicate the type graphic and change the opacity of the layer to 20 – 25 . Next merge the two layers by using the shortcut Ctrl + E. • Draw a frame using the pen tool and save the path. Right click over it and select stroke path use a calligraphic brush. Then fill the outer areas with white using the Bucket Tool but make sure though that the opacity of the Bucket Tool is set to 25. slide 28: 6. Admire your final artwork. slide 29: How to Rasterize Shape in Photoshop • Shape Layers are vector based layers where the shapes are defined by multiple control points. By moving the control points the shape can be edited. • You cant paint a shape layer until it rasterized. Once the layer is rasterized it becomes a bitmapped image and is defined by a series of tiny square pixels. slide 31: • Step One: Open a blank document in Photoshop File New. Set the size to 500 pixels by 500 pixels at 72 ppi. • Step Two: Select the Ellipse tool and set the options to Shape Layers. • Step Three: Draw an ellipse in the workspace. • Step Four: Click on the shape layer in the Layers palette. • Step Five: To rasterize the shape layer choose Layer Rasterize Shape. Notice that the layer thumbnail converts to a normal layer. Once rasterized the shape control points are no longer editable. slide 32: Vector Mask • A vector mask is a resolution independent path that clips out the contents of the layer. • Vector masks are usually more accurate than those created with pixel-based tools. • We create vector masks with the pen or shapes tools. slide 33: Add a vector mask that shows or hides the entire layer • In the Layers panel select the layer to which you want to add a vector mask. Do one of the following: • To create a vector mask that reveals the entire layer choose Layer Vector Mask Reveal All. • To create a vector mask that hides the entire layer choose Layer Vector Mask Hide All. slide 34: Add a vector mask that shows the contents of a shape • In the Layers panel select the layer to which you want to add a vector mask. • Select a path or use one of the shape or Pen tools to draw a work path. Note: To create a path with a Shape tool click the Paths icon in the Shape tool options bar. • Click the Vector Mask button in the Masks panel or choose Layer Vector Mask Current Path. slide 35: Edit a vector mask • In the Layers panel select the layer containing the vector mask you want to edit. • Click the Vector Mask button in the Properties panel or the thumbnail in the Paths panel. Then change the shape using the shape pen or Direct Selection tools. slide 37: Change vector mask opacity or feather mask edges • In the Layers panel select the layer containing the vector mask. • In the Properties panel click the Vector Mask button. • Drag the Density slider to adjust mask opacity or the Feathering slider to feather mask edges slide 38: Remove a vector mask • In the Layers panel select the layer containing the vector mask. • In the Properties panel click the Delete Mask button slide 39: Convert a vector mask to a layer mask • Select the layer containing the vector mask you want to convert and choose Layer Rasterize Vector Mask. Note: After you rasterize a vector mask you can ’ t change it back into a vector object. slide 40: Smart Objects • Smart Objects are layers that contain image data from raster or vector images such as Photoshop or Illustrator files. • Smart Objects preserve an im age’ s source content with all its original characteristics enabling you to perform nondestructive editing to the layer. • In Photoshop CC you can also create Linked Smart Objects whose contents are referenced from external image files. • The contents of a Linked Smart Object are updated when its source image file changes. slide 41: How smart object works Smart objects work like containers. All the different items can be placed inside the container. The container can hold various things such as: Multiple Photoshop Layers Illustrator vectors PDF Raw files slide 43: 1. Creating Smart Objects • Smart Objects can be created in a number of ways and typically the type of Smart Object we create depends heavily on how and where we create them. • For instance we can create Linked Smart Objects Photoshop CC 14.2 or Embedded Smart Objects. • Smart Objects can be created from the Layers panel by right clicking on them or we can create them by simply dragging and dropping items onto your canvas. slide 45: 2. Preserving Raster Image Quality • Preserving the quality of your layer is one of the most important features of Smart Objects. • Working with pixel image layers inside Photoshop can be very destructive. Even simple things like rotating layers with the Free Transform tool can cause loss of quality. • When we turn a pixel layer into a Smart Object Photoshop saves an embedded or linked file where it stores the necessary information for the original image. slide 47: 3. Saved Free Transform Settings • One of the great things about Smart Objects is how they save the Free Transform options that you apply to them. • If you distort a Smart Object for instance and apply the transformation your original transformation will still be available if you need to adjust the transformation later on. slide 49: 4. Shared Source • If you duplicate a Smart Object the usual way in a Photoshop document the same embedded or linked source file will be used for both instances. • That means you can duplicate a Smart Object several times and you can update them all by just changing their shared source file. slide 51: 5. Smart Object Via Copy • If we need to duplicate a Smart Object but we want to make sure that the two instances are not linked with a shared source file we should use the Smart Object Via Copy feature. • This way we can separate the duplicate layer from the original Smart Object. • The only disadvantage to this technique is that it will increase your file size. slide 53: 6. Replacing Contents • Replacing the contents of a Smart Object is very simple. All we need to do is to double click on the thumbnail of the layer and edit the source file. • We will find this feature especially useful if you use the Free Transform tool to distort and rotate your Smart Object. slide 55: 7. Convert Text Layers into Smart Objects • Text Layers can be scaled rotated and skewed without rasterizing them but they cannot be distorted in a non- destructive way by default. • The best way to keep them editable is to turn them into Smart Objects. • This will make distortions possible giving you access to the editable text inside the source of the Smart Object. The same technique can be used for Illustrator Smart Objects. slide 57: 8. Using Smart Filters • Another big advantage to Smart Objects is that they turn Filters into non-destructive Smart Filters. • These editable effects can stack up and be controlled individually. • There are only a few Filters that cannot be used as a Smart Filter one of which is the Vanishing Point Filter. slide 59: Conclusion Smart Objects are an incredibly powerful tool in Photoshop. They can be used to speed up your workflow but also to retain the quality of your images and reduce file size. slide 61: Contact Us: ADMEC MULTIMEDIA INSTITUTE C-7/114 IInd Floor Sector- 7 Rohini Delhi- 85 Landmark: Near Rohini East Metro Station Helpline 1: +91 9811 818 122 Helpline 2: +91 9911 782 350 ADMEC MULTIMEDIA INSTITUTE For More information you can visit : http://www.admecindia.co.in Leader in Animation Digital Media Education ISO 9001:2008 CERTIFIED

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