Question: Q: How do I change background color to white?
MacBook Pro 15″ 2.2GHz Intel Core i7 2011, Mac OS X (10.6.7)
Posted on Mar 30, 2011 12:45 AM
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If you only need to lighten the background a little you can use the Dodge tool. It’s found in the Adjustments panel; then Adjustments drop down menu > Quick Brushes > Dodge (Lighten). For your product I expect ticking the Detect edges box will make it quite easy. After brushing the background you can you the slider to increase or decrease the effect.
Hope this helps.
Mar 30, 2011 4:38 AM
Welcome to the user-supported Aperture discussion forum.
If you truly had a white paperboard, then it sounds more like a photography issue than a digital management issue.
When you use automatic exposure on your camera, it generally tries to make the image have «18% gray» overall. So, if you take a photo of a pure white paperboard, your camera will make the exposure such that it is «18% gray» and not actually white. Your camera, rather than you, chose the exposure, making it underexposed according to you. You didn’t want 18% gray — you wanted white.
If your paintbrush is a small part of the picture (and it probably is no more than 1/4 of the pixels of the photo), the light from the paperboard was factored into the automatic exposure much, much more than the light from the brush. So, you may want to try moving the exposure slider to the right.
On the other hand, if there is any cast of a color in your gray, it may be a white-balance issue. Try using the «dropper» in the white-balance adjustment to choose the background color and see what Aperture makes of that. I have a feeling this won’t accomplish what you want, though, as gray is simply a shade of white.
Mar 30, 2011 4:51 AM
Mar 30, 2011 5:03 AM
It didn’t work. I am so sorry I am so new to this.
Here is the photo I wanted to edit.
There is the paint brush, and the background is not white. I wanted to make the background white. and if I could easily take away the shadow (the darker one under the paint brush) then it would be even better.
Mar 30, 2011 5:12 AM
Mar 30, 2011 5:57 AM
As nathan points out, this is really a photography question, not an Aperture question: the problem is with your original, and the solution lies there. The best advice I can give you is to talk to a photographer who specializes in product shots.
That said, there are at least a few things you can do in Aperture to get closer to the effect you want.
First, the paper is showing as blue, not gray. It also varies in blueness from bottom to top (the top is lower in luminance and bluer).
A White Balance adjustment can help. In the example below, I set to white balance to an area between the two brush handles.
In general, one can force the over-exposure (over exposure = white) by changing the white point using some combination of the Exposure slider and the Curves and Levels Bricks. In your capture, the reflection off the ferrule is the brightest part of the picture. Adjusting the white point so the paper is appears white completely over-exposes the ferrule. The solution using Aperture is to apply the adjustments as needed for the paper, and then +brush away+ the adjustment from the area where it is undesirable.
Here is a quick-and-dirty attempt to get you closer to what you want:
The darker areas of the paper are still blue. And the shadow under the brush hasn’t been touched.
If you want to completely cut-out your brushes from the background, and show them on an opaque background of any color — that’s a job for Photoshop or another image editing program. My sense of this remains, however, that your time would be better spent improving the source photographs rather than attempting to fix them in PP.
Mar 30, 2011 6:06 AM
Was the original import JPG or RAW? If its JPG you’ll be extremely limited in the adjustments you can make especially to white balance. Looking at the image you posted I’d say it’ mostly a white balance issue.
Can you retake the shot? If so take it in RAW you’ll have much more latitude once you’re back in Aperture. If you can’t take RAW what type of camera are you using and what are your choices for white balance? What was the lighting setup?
If you’re camera has a custom white balance setting that would be the way to go. If not take a series of shots with each of the white balance setting you do have. Remember this only applies if you are shooting JPG, if you can shoot in RAW none of this matters.
Mar 30, 2011 6:14 AM
Played around a bit. Unfortunately when you try to drive the background to white the overall picture gets somewhat harsh and the noise increases. If you can’t retake the shot you might have better luck in an image editing application, PS, The GIMP, etc. You probably could do something with layers.
Mar 30, 2011 6:36 AM
When creating Apple books (well in fact it was a Bob book but I did it in Aperture and exported it) I found a nice tip using Curves. I’m not in front of Aperture now so forgive me if this is slightly vague. I used curves to effectively reduce the opacity of an image and turning it slightly whiter (if that makes sense). Anyway using this technique you can turn an image completely white if you take the effect to the extreme and then just brush in the effect (with detect edges ticked).
So go in to curves and expand it. Grab the ‘curve’ at the bottom left of the graph (where the x and y axis meet) and drag it vertically upwards. If you go to an extreme you will be left with a horizontal curve and the photo will turn white. This gives the reduced opacity effect I described above.
Additionally you can grab the slider on the bottom right of the curve (along the x axis)and drag it to the left. The highlights will start to get blown out. Once the grey area is white stop, it will look a bit odd. But you then want to brush this effect in just to the grey areas. The rest of the photo ie the brushes will now remain unaffected.
If its still showing slightly blue just go to the B&W brick and brush that in to the white / blue area. This will give you a completely white background and the brushes will be unaffected. (Note you may want to zoom in to ensure your brushing in is accurate). I can try and have a go tonight if I remember.
Источник
Apple with white background
Apple provides several Sign in with Apple buttons you can use to let people set up an account and sign in. If necessary, you can create a custom button to offer Sign in with Apple; for guidelines, see Creating a Custom Sign in with Apple Button.
Prominently display a Sign in with Apple button. Make a Sign in with Apple button no smaller than other sign-in buttons, and avoid making people scroll to see the button.
Using the System-Provided Buttons
When you use the system-provided APIs to create a Sign in with Apple button, you get the following advantages.
- A button that’s guaranteed to use an Apple-approved appearance
- Assurance that the button’s contents maintain ideal proportions as you change its style
- Automatic translation of the button’s title into the language specified by the device
- Support for configuring the button’s corner radius to match the style of your UI (iOS, macOS, and web)
- A system-provided alternative text label that lets VoiceOver describe the button
For developer guidance, see ASAuthorizationAppleIDButton (iOS, macOS, and tvOS), WKInterfaceAuthorizationAppleIDButton (watchOS), and Displaying and Configuring Sign in with Apple Buttons (web). You can also visit Sign in with Apple Button to view and adjust live previews of web-based buttons and get the code.
The system provides several variants of the button title. Depending on the platform on which your content runs, choose the variant that fits the terminology of your sign-in experience and use it consistently throughout your interfaces.
The following button titles are available for iOS, macOS, tvOS, and the web:
For watchOS, the system provides one title: Sign in.
Depending on the platform, the system provides up to three options for the appearance of the Sign in with Apple button: white, white with an outline, and black. Choose the appearance that works best with the background on which the button displays.
White
The white style is available on all platforms and the web. Use this style on dark backgrounds that provide sufficient contrast.
White with Outline
The white outlined style is available in iOS, macOS, and the web. Use this style on white or light-color backgrounds that don’t provide sufficient contrast with the white button fill. Avoid using this style on a dark or saturated background, because the black outline can add visual clutter; instead, use the white style to contrast with a dark background.
Black
The black style is available on all platforms and the web. Use this style on white or light-color backgrounds that provide sufficient contrast; don’t use it on black or dark backgrounds.
Unlike the black Sign in with Apple button for other platforms, the watchOS button uses a fill color that’s not fully black. To contrast with the pure black background of Apple Watch, the watchOS button uses the system-defined dark gray appearance.
Button Size and Corner Radius
Adjust the corner radius to match the appearance of other buttons in your app. By default, the Sign in with Apple button has rounded corners. In iOS, macOS, and the web, you can change the corner radius to produce a button with square corners or a pill-shaped button. For developer guidance, see cornerRadius (iOS and macOS) and Displaying and Configuring Sign in with Apple Buttons (web).
Minimum corner radius
Default corner radius
Maximum corner radius
Maintain the minimum button size and margin around the button in iOS, macOS, and the web. Be mindful that the button title may vary in length depending on the locale. Use the following values for guidance.
| Minimum width | Minimum height | Minimum margin |
|---|---|---|
| 140pt (140px @1x, 280px @2x) | 30pt (30px @1x, 60px @2x) | 1/10 of the button’s height |
Creating a Custom Sign in with Apple Button
If your interface requires it, you can create a custom Sign in with Apple button for iOS, macOS, or the web. For example, you may want to align logos across multiple sign-in buttons, use buttons that display only a logo, or adjust the button’s font, bezel, or background appearance to coordinate with your UI.
Always make sure that people can instantly identify your custom button as a Sign in with Apple button. If your custom button differs too much from the standard one, people may not feel comfortable using it to set up an account or sign in. App Review evaluates all custom Sign in with Apple buttons.
Apple Design Resources provides downloadable Apple logo artwork you can use to create custom Sign in with Apple buttons that display either a logo only or a logo and text. The logo files are available in PNG, SVG, and PDF formats, and the artwork for both types of buttons includes both black and white versions. Here are examples of the black and white logo-only art files, each with a background added for visibility.
All downloadable logo files include padding that simplifies positioning the logo in a button. Logo-only logo files include horizontal and vertical padding that ensures the correct proportion of the logo relative to the button. In addition to padding that keeps the logo and button correctly proportioned, logo files for buttons with text also include horizontal padding that provides a minimum margin between the logo and the button’s leading edge and title.
Use only the logo artwork downloaded from Apple Design Resources; never create a custom Apple logo. As you create a custom Sign in with Apple button, follow these guidelines for using the downloadable logo file:
- Use the logo file to position the Apple logo in a button; never use the Apple logo as a button.
- Match the height of the logo file to the height of the button.
- Don’t crop the logo file.
- Don’t add vertical padding.
To make sure that your custom button is visually consistent with the system-provided Sign in with Apple button, don’t change the following attributes.
- Titles. Use only Sign in with Apple, Sign up with Apple, or Continue with Apple.
- General shape. Buttons that combine the logo with text are always rectangular; logo-only buttons can be circular or rectangular.
- Logo and title colors. Within a button, both items must be either black or white; don’t use custom colors.
To coordinate with your app design, you can change:
- Title font. You can also adjust the font’s weight and size.
- Title case. You can capitalize every letter in the title.
- Background appearance. The overall color should remain black or white. If necessary, you can include a subtle texture or gradient to help the button harmonize with your interface.
- Button corner radius. You can use a corner radius value that matches the other buttons in your UI.
- Button bezel and shadow. For example, you can use a stroke to emphasize the button bezel or add a drop shadow.
Custom Buttons with a Logo and Text
Choose the format of the logo file based on the height of your button. Because SVG and PDF are vector-based formats, you can use these files in buttons of any height. Use the PNG files only in buttons that are 44 points tall, which is the default (and recommended) button height in iOS. Logos are available in small, medium, and large sizes, so you can match logo sizes in all the sign-up buttons you display.
Prefer the system font for the title — that is, Sign in with Apple, Sign up with Apple, or Continue with Apple. Regardless of the font you choose, the title and button height of your custom button should use the same proportions that the system uses. Using the system font for example, the title’s font size should be 43% of the button’s height — in other words, the button’s height should be 233% of the title’s font size, rounded to the nearest integer. Here are two examples that show these proportions using different sizes of the system font.
In general, preserve the capitalization style of the title. By default, all variants of the button title capitalize the first word — that is, Sign or Continue — and Apple; all other letters are lowercase. Avoid changing this style unless your interface uses only uppercase.
Keep the title and logo vertically aligned within the button. To do this, vertically align the title to the middle of the button, then add the logo image, making sure its height matches the height of the button. Because the logo image includes top and bottom padding, vertically aligning the title in the button ensures that the title, the logo, and the button stay properly aligned.
Inset the logo if necessary. If you need to horizontally align the Apple logo with other authentication logos, you can adjust the space between the logo and the button’s leading edge.
Maintain a minimum margin between the title and the right edge of the button. The margin should measure at least 8% of the button’s width.
Maintain the minimum button size and margin around the button. Be mindful that the button title may vary in length depending on the locale. Use the following values for guidance.
| Minimum width | Minimum height | Minimum margin |
|---|---|---|
| 140pt (140px @1x, 280px @2x) | 30pt (30px @1x, 60px @2x) | 1/10 of the button’s height |
Custom Logo-Only Buttons
Choose the format of the logo file based on the size of your button. The downloadable artwork for logo-only buttons is available in SVG, PDF, and PNG formats. Use the vector-based SVG and PDF formats for buttons of any size; use the PNG format only in buttons that measure 44×44 pt.
Don’t add horizontal padding to a logo-only image. A logo-only Sign in with Apple button always has a 1:1 aspect ratio, and the artwork already includes the correct padding on all sides.
Use a mask to change the default square shape of the logo-only image. For example, you might want to use a circular or rounded rectangular shape to present all logo-only sign-in buttons. Never crop the Apple-provided artwork to decrease its built-in padding or use the logo by itself, and avoid including additional padding.
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