Transferring Multilayer Drawings to Photoshop

You have already seen how to transfer drawings from AutoCAD to Photoshop and maintain the graphic scale in the image. Drawings transferred in this way appear on a single layer in Photoshop. However, typical CAD drawings contain many layers, and more creative possibilities open up if you can access these as individual image layers in Photoshop. It is possible to transfer the layers from an AutoCAD drawing to a Photoshop image by printing each layer one at a time and then integrating the image...

Figure 6.22

Drawing a white shape layer drag out a rectangle on top of the existing line work. 16. Apply an Inner Shadow effect to the Entry Shadow shape layer. In the Layer Style dialog box, set the following parameters 50 Opacity, 20 px Distance, 10 Choke, and 25 px Size. Click OK to close. Figure 6.23 shows the entry shadow. 17. Save the file as E1evation3.psd. If you're going to continue working through the following sections, you can leave this file open for now.

Scale and Resolution

CAD drawings are made in real-world scale, meaning they are drawn to actual size. Thus, drawing in CAD is easy because you don't have to worry about scale until it comes time to lay out the drawings on a sheet of paper. You choose a specific graphic scale (such as 1 8 1'-0) in a layout to fit the measured drawing on a sheet of paper. When you convert drawings to images, the scale must relate to image resolution in a specific way in order to maintain the graphic scale on the printed page. For...

Creating and Optimizing Slices

Dividing an image into slices has many advantages when displaying visual information in a web page. Each slice can have different compression settings, so better overall optimization can be achieved (quality level versus file size). Slices can host rollovers and advanced animation effects. Furthermore, transmitting multiple smaller images rather than one large image is more efficient. Let's start by editing a sample file in ImageReady. 1. Open the sample file Slices.psd in Photoshop from the...

Figure 5.56

The logo size and placement on a sheet 11. Add the sheet title next to the company logo. First, press D to set the default colors. Then press T to select the Text tool, and on the Options bar choose Verdana font at 20 pt size. Type Kitchen Project and click the Commit button. Press V, and move the text adjacent to the logo. Because this image is actually to scale (see the Scale and Resolution section earlier in this chapter), we can indicate 1 4 scale and include a graphical scale bar on the...

Figure 7.14

Click the Assign Material To Selection button on the Material Editor toolbar. Notice the white triangular corner tabs that appear in each corner of the material sample slot these indicate the material is hot, or instanced in the scene. ' avo m ik avfl m n. oflujc, life i 7. Do a quick render (press Shift+Q). The RFW appears, displaying the framing object in red. Click the Display Alpha Channel button on the RFW toolbar. The grayscale alpha channel displays, showing the boundaries of this...

Figure 9.5

NOTE You could choose File > Page Setup before Print With Preview in step 8 if you want to separate these steps, but that is not necessary. 10. Before you set anything in the Page Setup dialog box, select the print device, because the information that is in Page Setup depends on the printer driver you select Click the Printer button in the lower-right corner to open the small Page Setup dialog box. Click the Name drop-down and select your printer driver (see Figure 9.6). I'll select EPSON...

Enhancing CAD Drawings with Photoshop®

Publisher Dan Brodnitz Acquisitions Editor Willem Knibbe Developmental Editor Pete Gaughan Production Editor Lori Newman Technical Editor Ryan Spruston Copyeditor Pat Coleman Compositor Kate Kaminski, Happenstance Type-O-Rama Proofreaders Ian Golder, Nancy Riddiough Book Designers Maureen Forys, Happenstance Type-O-Rama and Judy Fung Cover Designer John Nedwidek, Emdesign Cover Illustrators Scott Onstott and John Nedwidek, Emdesign Copyright 2005 SYBEX Inc., 1151 Marina Village Parkway,...

You and Your Entourage

Entourage is a term used in traditional architectural illustration to describe elements added to a rendering that place a building in the context of its environment and relate it to human scale. Examples of entourage are people, furniture, cars, trees, plants, and flowers. This chapter will teach you how to extract and enhance image-based 2D entourage in Photoshop and then show you how to employ it in the 3D world of Autodesk VIZ. Although it is possible to create true 3D entourage in Autodesk...

Inks

When it comes to inkjet ink, you need to take several items into account. Many high-end printers use more than the traditional four inks that emulate traditional printing presses cyan, magenta, yellow, and black . For example, Epson currently uses the seven-color ink system mentioned in Chapter 1 that includes light cyan, cyan, light magenta, magenta, yellow, light black, and black. HP currently has an eight-color ink system in some models. The actual ink droplet size is critical in how much...

Figure 4.41

Copy the diffuse map to the opacity Map. Right now you have an identical copy of the diffuse map in the Opacity channel. You still must change the output of the opacity map to read the alpha channel of the image otherwise, it reads the RGB values by default to determine opacity. 6. Click the M button next to the Opacity channel to enter a deeper level of the material hierarchy. The Bitmap controls appear in the Material Editor. Scroll down and locate the Bitmap Parameters rollout. Click the...

Sharpening and Blurring

Sharpen and blur at the end of your digital darkroom work flow because they can significantly alter image data. Correct the tone, balance the color, and retouch before sharpening and blurring to minimize banding and data loss due to overmanipulation. Sharpening and blurring are opposites one clarifies, and the other obscures. You use both tools to your advantage in Photoshop. You sharpen images to make the edges more visually defined. We prefer images with distinct edges because they resonate...

Rendering in VIZ

You'll be making several renderings of the 3D model in VIZ to ultimately integrate into the illustration project for work in Photoshop. All the renderings made in this chapter will be generated from exactly the same point of view, although each will contain different forms of image data. Although the rendering process presented here has some similarities to the compositing process presented in Chapter 7, there are important differences. Instead of rendering each object as a separate image,...

Correcting for Two-Point Perspective

Three Point Perspective Drawing

Photos of tall buildings tend to have walls that lean inward, especially if taken with wide-angle lenses. If you extend lines along all the wall edges, they converge at three points in the distance two on opposite sides of the horizon, and one directly above , technically called three-point perspective. In architectural illustration, it is common to draw tall buildings with straight vertical walls because we know in our minds that walls are vertical. In two-point perspective, objects along the...

Illustrating Architecture

For many years photo-realism has been aggressively marketed by software companies, in trade magazines and in computer graphics circles. A 2004 survey at www.cgarchitect.com shows that the architectural visualizations created most often, by a wide margin, are photo-realistic renderings. Although it is certainly true that a photo-realistic 3D rendering can be spectacular and at best is indistinguishable from a photograph, liabilities to this style are worth considering. Every facet of a...

Using Brushes

You can use brushes for a lot more than painting in Photoshop. As you will see in Chapter 3, you often use brushes in the digital darkroom to edit images in many ways. Choosing a brush shape is the most important decision in determining the character of its stroke, but this is only the beginning. Brushes have numerous parameters that affect their stroke's appearance, including hardness, spacing, textures, dual brush tips, scattering, and many dynamic properties that occur in time. You will...

Converting AutoCAD Drawings

Autocad Elevation Designs Dwg

AutoCAD elevations are line drawings that often include line thickness called line weight in AutoCAD as another graphical dimension. Traditionally, elevations convey the outlines of a structure's major features, and line weight emphasizes depth and the relative importance of the objects shown. Elevation layers in AutoCAD are usually numbered sequentially Elev-1, Elev-2, and so on , thus identifying their line thickness for example, progressive layer numbers might refer to thinner lines. In...

Casting Shadows

Casting shadows is the primary way to create the illusion of depth in an elevation. You can cast shadows in many ways, and you will be exposed to several techniques in this section. Three niches are just above ground level in the elevation. We'll apply the Inner Shadow effect to make these appear recessed into the facade. We'll also create the illusion of a frame projecting out from the facade surface, for the ornament above the glazing system where the building address belongs, through...

Figure 5.49

Hollyhock Pattern

Play around with effects until you are satisfied with the layer's appearance. Use the following effects as guidelines for the Hollyhock-Property layer Pattern Overlay Use the Stucco 2 pattern from the Texture Fill 2 library with a scale of 99 . Color Overlay Select a forest green with HSB values of 100,50,50. Set the Blend mode to Overlay. Bevel and Emboss Use a Smooth Inner Bevel directed down with 100 Depth, 3 px Size, and 8 px Soften. Inner Shadow Set Opacity to 50 , set Distance to 5 px,...

Disabling a Printer's Color Correction

Now that you have profiled your monitor, it is time to think about your printers. Every printer has drivers that let it communicate with your computer. The drivers are written by the manufacturer available on their website and have controls specific to your device. Many drivers have built-in color correction software that you can use, or you can disable that software and let Photoshop take over the color management issues. Become familiar with the options available in your specific printer...

Extracting a Plum Tree

Improved Acad Drawing Photoshop

You cannot always control the background conditions in your photographs, especially with large-scale objects. This tutorial shows how to extract a 30-foot high plum tree from its natural outdoor background. In some ways, this is more challenging than extracting a person, because of the translu-cency of the leaves the intermingling of foreground and background in an outdoor setting make it more difficult. Let's dive in. 1. Open the file PlumTree.psd from the CD. Figure 4.15 shows the starting...

Display Devices

Monitor quality varies, and you usually get what you pay for. If you can afford it, invest in large 21 displays and graphics cards that support high resolution and color depth. Monitors usually last through at least two or three computer replacement cycles, so their value can be amortized over a longer period. A seven-year service life is safe to assume for top-level manufacturers. Flat-panel liquid crystal displays LCD render sharpness more clearly, while cathode ray tube CRT monitors render...

Contents

Anti-aliasing and Raster Data Storage and Understanding Modes, Bits, and Bitmaps and Grayscale Images Color Color Bit Depth Additive versus Subtractive Color Selecting Saving and Loading Selections with Layer Layer and Vector Painting, Adjusting, and Filtering 31 Making Using Adjustment and Fill Layers 35 Reversing Changes Undo, Fade, and History 38 Text, Shapes, and Paths Creating and Editing Text Creating and Editing Shapes and Paths 42 Setting Image Size, Resolution,...

Adding Entourage

Adding human entourage gives the viewer a sense of scale, and adding vegetation can soften the building and provide context for the construction. You will use the entourage library developed in Chapter 4, You and Your Entourage, to enhance this elevation. It is wise to create a layer set when you anticipate creating a series of related layers the added organization will help you navigate a crowded Layers palette. 1. If you have E1evation4.psd open from the previous exercise, you can continue...

The Hollyhock Project

This project is a large-scale site map that illustrates the layout of an entire facility. It shows the relationship of the buildings to the overall site and how they are connected with curving footpaths. You will be creating the map that is given to visitors as they arrive at Hollyhock. NOTE Hollyhock is Canada's leading educational retreat center www.hollyhock.ca . The facilities are in a natural setting where the rainforest meets a sandy beach on a beautiful island in British Columbia. The...

Figure 8.29

On the Options bar, turn Opacity down to 50 and make another few brush strokes. Paint applied with lower opacity appears lighter. 7. Press X to exchange the foreground and background swatches in the toolbox so that white is in the foreground. Make additional brush strokes, and notice how they seem to remove paint from the surface because you are painting in white . Press the backslash key to toggle rubylith mode off. 8. Select the next layer Layer 2 . Press the backslash key again to toggle...

Rendering the Shadow Element

So far you have rendered only the objects themselves, but none of the shadows. Instead of rendering shadows on each object, it is more efficient to render the shadows all together in a single image that you can later composite in Photoshop. This way, you'll have global control over the shadows by being able to change the opacity of the shadow image layer. In VIZ, you must first turn on shadow casting in at least one light source. You can then render the shadows in a separate pass by using the...

Building an Entourage Library

Transparent Library

After you create some quality entourage and realize how much time can go into preparing each object, you will want to find ways to reuse your assets in future projects. It is helpful to create a library of entourage in a single Photoshop file where you can quickly see each piece and evaluate it for its appropriateness. Often the entourage that you can use in a given project is determined by the camera angle and the lighting conditions of your composition. Instead of trying to come up with...

Applying Layer Styles

You can apply multiple effects within the Layer Style dialog box in a series of steps. The following steps overlay a grayscale pattern and scale it down to suit the size of the kitchen island. 1. With the Kitchen-A-mlwk-ilnd layer still selected, click the Add A Layer Style button at the bottom of the Layers palette and select Pattern Overlay from the menu. In the Layer Style dialog box, open the Pattern Picker and click the triangle button. Select the Texture Fill library from the menu see...

Presenting Plans

Designers in all professions use plans as their single most common form of graphical communication. If you are an architect, an engineer, a contractor, an industrial designer, or a real estate developer or are in any other profession that uses measured drawings every day, chances are, the ability to read plans has become part of your subconscious mind. It is easy to assume that showing plans to your clients should communicate your design intent to them as clearly as you understand it. However,...

Figure 8.30

Press D to set the default colors. Press Alt Backspace to fill the layer with black. 3. Press D to set the default colors. Press Alt Backspace to fill the layer with black. 4. Drag the new layer into the Ground layer set. If you haven't yet made this layer set, do so now. Rename the layer Grass. 5. Apply layer style effects double-click just to the right of the name Grass in the Layers palette to open the Layer Style dialog box. Apply the following effects see Figure 8.32 Pattern Overlay...

Color Images

Color is a complex subject that you will learn more about in Chapter 2, Working with Color. For now, let's start by taking a look at how color images are stored in computers. Color is represented digitally by combining a few basic or elementary colors to obtain others. For example, in the RGB color mode, there are three component colors red, green, and blue. A large range of color can be produced by combining the elementary or component colors in differing amounts. Color is stored in channels...

Bitmaps and Grayscale Images

Colour Pixel Rgb Grayscale Value

The fundamental unit of information on a computer is called a bit. A bit can either be 1 or 0 and is the basis of binary computing. Figure 1.9 shows the simplest kind of computer image, a bitmap. NOTE There are 8 bits in a byte. Bytes are a common measure of information in a computer. Most files are measured in kilobytes KB or megabytes MB . Hard drives currently store many gigabytes GB , or billions of bytes of data. You will open a bitmap and examine it in detail. 1. Open the file...

Figure 5.18

Drawing Multilayer Wall Autocad

Press Ctrl P to open the Plot dialog box. Click OK if a warning dialog box appears indicating a missing driver you ll select the correct driver in a moment. Just as you have done before, select ImagePrinter.pc3 in the Printer Plotter group, ImageSize in the Paper Size group, and Images.ctb as the Plot Style Table. Set Plot Scale to 4 pixels 1 unit as shown in Figure 5.16, earlier in this chapter. Click the Preview button to display an image similar to Figure 5.18. Press Esc twice to cancel...