Best practice for compressing images to uniform size?

What would be an effective method of compressing all the images (JPEG) used by an application to a uniform contentLength?
Initial thought is to generate a new copy using processCopy with successively smaller integer values for compressionQuality (in steps of 5 or 10 say) until a result smaller than the target length is achieved, then replace the original with the first suitable copy.

contentLength is decided by many factors such as height, width, compressionQuality.
If all images have same height and width, changing compressionQuality will help to get expected contentLength. But be care when using too small compressionQuality, which may make image quality poor.
Another way to have uniform contentLength is using TIFF format with NONE compression.

Similar Messages

What are the Best Practices for Optimizing Images in InDesign Files

Is there a best practice for using images InDesign to optimize the document before converting to a PDF? Specifically, what I'm asking is, will the PDF file compress better if the images are cropped prior to placing them in Indesign? I'd like to know the answer for both creating PDF files for printing using images that are 300dpi and for creating PDF files for online delivery using images that are 72dpi. I have an employee that insists images need to be cropped to actual dimensions before placing in the InDesign document. I've never done it that way and believe that her recommended process is way too time consuming and leaves you with no leeway to tweak your page design since the images are tightly cropped.

As for absolute cropping, I agree with your stance. Until the layout is fixed, preserving your ability to easily manipulate photo size and positioning is key.
Some clever image management methods have been described in the discussion forums, and one that appealed most to me was the use of duplicate linked image folders. Having a high-res (CMYK) folder and a low-res (RGB) folder to switch between for different output enables you to use both to your advantage. Use the low-res images for layout, for internal proofing, and for EPUB/online PDF/HTML output. Then it's simply a quick switch to the high-res image folder for print purposes. You can easily prepare the alternate collection of images with a Photoshop batch convert script or with the Photoshop Image Processor. Save your presets!

Best practice for setting or detecting screen size?

Hi All,
Trying to determine a best practice for setting or detecting the screen size. For playbook and iOS, I can set them. But for Android, the number of devices is too large so I'd rather detect. My first choice is to use the stage.stageHeight and stage.stageWidth. This works fine if I set my stage properties with standard meta data:
[SWF(height="320", width="480", frameRate="64", backgroundColor="#010101")]
However, if I use the application descriptor file to set the stage dimentions (as suggested by Christian Cantrell here http://www.adobe.com/devnet/flash/articles/authoring_for_multiple_screen_sizes.html)
<initialWindow>
<aspectRatio>landscape</aspectRatio>
<autoOrients>false</autoOrients>
<width>320</width>
<height>480</height>
<fullScreen>true</fullScreen>
</initialWindow>
Then the stage.stageHeight and stage.stageWidth are not the correct numbers when my main class is added to the stage. Sometime after the main class is added to the stage, then those numbers are fine. Is there an event I can wait for to know that the stage.stageHeight and stage.stageWidth are correct?
Thanks in advance!

Hi Lee,
Thanks for the quick response! However, for some reason the heightPercent & widthPercent metadata tags are not working as expected for me.
I have a wrapper class that I target for compiling, WagErgApplePhone.as where I've got my metadata
[SWF(heightPercent="100%", widthPercent="100%", frameRate="64", backgroundColor="#010101")]
sets some stage properties
stage.quality=StageQuality.LOW;
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
and instantiates my main class
var main:Main = new Main();
addChild(main);
my main class constructor even waits for the stage
public function Main(){
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
in my init function, stage.stageHeight traces out as 375 (expecting 320).
i have a function which is called via a button press event by the user, and stage.stageHeight traces out correctly (320) there. that's what makes me think that if i wait long enough, i can get the correct stageHeight before init/drawing. but i'm not sure what event to listen for, or if there's another trick.
if i use Capabilities.screenResolutionX and Capabilities.screenResolutionY the correct values are provided for mobile, but these values are not useful for the desktop and web version of the app. if there's no other solution, i'll execute different code depending on platform.
again, for reference, my app descriptor:
<initialWindow>
<aspectRatio>landscape</aspectRatio>
<autoOrients>false</autoOrients>
<width>320</width>
<height>480</height>
<content>bin-iOS/WagErgApplePhone.swf</content>
<title>WAG ERG</title>
<fullScreen>true</fullScreen>
<renderMode>cpu</renderMode>
</initialWindow>
looking forward to any other ideas to try out & thanks so much for your thoughts! if you want to really dig in, this is an opensource project at code.google.com/p/wag-erg/

Best practice for increasing image processing speed

Are there best practises for efficient image processing so that the overall perfomance speed will be improved? I have a need to do near real time image processing (threshold, filtering, particle analysis/cleaning and measurements) at 10fps. So far I am not satisfied with my cycle time so I am wondering if there are documented ways to speed up performance.
Solved!
Go to Solution.

Hi,
Navigates to the "Vision and Motion" palette, then "Vision Utilities" and "Image Management" palette, you will find ther the "IMAQ multi-core options" vi.
You will be able to set or get the number of cores used by the IMAQ functions.
Regards

Best practice for moving images between projects?

Hey all,
I have a project that has an album inside of it. I want to move the album, containing all of the photographs to a new project. If I drag the photos individually to the new project it moves them successfully although they now don't belong to an album in their new project. If I drag the album itself it moves the album and photographs but leaves the photos in the original project as well.
Does anyone have some best practice ideas for this scenario?
Thanks in advance for any help!

As you have discovered if the drop target is the project the images move projects. If the drop target is an album the images show up in the album but do not actually move anywhere. Moving albums does nothing to move masters. So...
Select all of the images in the album. Drag them to the new project and then drag the album to the new project. Simple enough.
RB

Best practices for placing images in epubs

Okay, I've read the books, I've watched the tutes and I'm still at a loss on the best way to add images to InDesign 5.5 documents that I will convert to ePub. The images are created in Photoshop at 300 dpi and sized at 800by600. And yet when I place them in InDesign and create the ePub, the images display poorly in ADE and other readers. What is the magic formula for adding images to my ePubs?
Thanks in advance
Chris

Steve/Jongware:
My thanks for your responses.
Very good point to look at the images within the epub file. They are 72 dpi images, so it would seem that InDesign is indeed lowering the resolution. I had thought I tried every variation of the available settings within InDesign to avoid this but it would seem to not be the case. If you have any specific suggestions about what setting is causing this, that would be great.
Viewing the images in the target device is of course ideal. I'm creating this for a wide range of online bookstores, so what device it will be viewed on can't be known. Since ADE drives more than 50 devices, I had hoped that would at least prove to be a reliable base of some sort -- disappointing to hear that ADE can not be trusted in that regard. I had assumed I could proof the book in that before converting to mobi and proofing on a Kindle.
Why would anyone insert 300 dpi images, you ask? In its publishing guidelines, Amazon says: "To future-proof the content, save images in 300 dpi" Is this then bad advice on their part? Elizabeth Castro echoes this recommendation in her excellent book on the subject, by the way. It's rather difficult to know just what to do, I must admit. But I guess we're still in the early days of eBook creation, with best practices still being in a state of flux.
Once again, my thanks for sharing your experience.
Chris

Best practice for adding images to a RH8 HTML project?

I'm working on a Word to RH8 HTML conversion. The images in Word are SNAG images but the resolution is poor and some of the images may need to be recreated from scratch again. Going forward I imagine I should work on getting them right in Snagit9. Any suggestions?

For example, installation help topics dealing with install/uninstall screenshots for an application's client and server:
client_dir_sum.gif
client_dot_net.gif
client_uninst_wlcm.gif
server_wlcm.gif
server_cfg_tomcat.gif
server_success.gif
server_uninst_wlcm.gif
...or, screenshots dealing with an Accounts window:
acct_groups.gif
acct_lookup.gif
acct_lookup_btn.gif
acct_templates.gif
In other words, use cfg for configuration, dir for directory, btn for button, etc., and use either a function or application window as your lead, allowing you to see all related graphics in sequential order. If you've ever done any manual book indexing, think of this as Index entries/subentries, only the "entry" in file naming is your leading prefix (client_, acct_, etc.), and your subentries are the rest of each file name. Such as:
Accounts
configuring groups
using lookup feature
lookup button
templates
Use the same naming conventions for your topic file names as well; using this method eliminates the need for virtual folders. Many users on this forum use the folder structure, but editing/renaming/adding/deleting folders seems to very often create all sorts of grief. I find this naming structure to be less stressful.
Good luck,
Leon

Best practice?-store images outside the WAR file?

I have an EAR project with several thousand images that are constantly changing. I do not want to store the images in the WAR project since it will take an extremely long time to redeploy with every image change. What is the best practice for storing images? Is it proper to put them in the WAR and re-deploy? Or is there a better solution?

Perryier wrote:
Can you expand on this? Where do they get deployed and in what format? How do I point to them on a jsp?
I am using Sun Application server 9.0, and I don't really think this has a "stand alone" web server. How will this impact it?You could install any web server you want (Apache?). The request comes in and if the request matches something like .jpg or .gif or whatever, you serve up the file. If you have a request for a jsp or what not, you forward the request to the app server (Sun App Server in your case). i.e. your web server acts as a content-aware proxy.

Best practices for image compression in dps

Hi! I have been reading up on best practices for image compression in dps, and I have read that the source assets of panoramas, image sequences, pan and zoom images, and audio skins are not resampled on upload. So you therefore need to resize them and compress them before dropping them into your article, because dps doesn't do it for you. Okay can do!
So then Im also reading that the source assets of slideshows, scrollable frames, and buttons ARE resampled as PNG images. Does this mean that DPS will compress them for you when you build the article? So does that mean I shouldn't bother going to the trouble of resizing these images at all? I can just pop in the 15mb 300dpi files used in the print magazine and dps will compress them upon building the article - and this will have no affect on file size?
And this is also the case with static background images?
Thanks for your help!

All images are automatically resampled based on the size of the folio you make. You can drop in whatever resolution image you want, it doesn't matter.
Neil

Best file for importing images from Illustrator and Photoshop for small file sizes

Hello Adode consults!
I'm in the process of preparing an inDesign file for a school project -- I've already had a few harrowing experiences sending large files to the printer that are too large to process (and a very grumpy computer, etc). The end result will be a poster around 36 inches by 4 or 5 feet.
I'm wondering if there are any best practices for making sure that the files imported into InDesign are a manageable size to begin with. Should I, for instance, be saving each file as a jpeg before placing in Indesign?
Thanks!
-Katherine

No, you should not save every file as JPG before placing it in INDesign. JPG is only usefull for raster images (like photos) without any transparency in high quality.
When you place images use:
For raster images from Photoshop psd (rgb with color profile)
For raster images from Photoshop with form layers, texts or any vector element use PDF (or PDP) with layers.
For vector graphics from Illustrator use AI files or PDF.
For layouts from other InDesign projects use either the INDD itsself or export a PDF/X4.
But to the printer deliver a PDF according to their standards. E.g. when they need CMYK files export as PDF/X1a with the required output color space and the resolution they want. Produce the pdf via Export (Print).
Don't deliver open INDD. File size should for printing projects not be an issue.

Best practice for Spark repeating background image in a SkinnableContainer?

In my old Flex 3.5 code I would accomplish this by dropping an Image into a Canvas and hitting the Canvas with some css style stuff to get the repeat. The Image tag had a source property that would take a web address so I could dynamically grab different images from the web based on some conditions. Little bit more trouble with Flex 4.5 and Spark but I'm trying to get there.
Here Adobe docs explain how to *embed* a background image:
http://help.adobe.com/en_US/flex/using/WS422719A4-7849-4921-AF39-57FF567B483B.html#WS063B0 491-B7AB-4b00-A39F-E44310BCB0E0
They use a BitmapFill object in the skin.

    <s:Rect id="background" left="3" top="3" right="3" bottom="3" alpha=".25">
        <s:fill>
            <s:BitmapFill source="@Embed(source='../../assets/myImage.jpg')"/>
        </s:fill>
    </s:Rect>
Problem is I need to do this without embedding the image. In my old code I grabbed the image from web (set source property on Image tag to web address). What's the best practice for achieving this with a skinnable container? The BitmapFill object used above won't take a web address for a source.
Thanks in advance.

Use BitmapImage with a fillMode of repeat:
<s:BitmapImage source="http://www.google.com/intl/en_com/images/srpr/logo2w.png" width="100%" height="100%" scaleMode="stretch" fillMode="repeat" />

Best practice for a site with a lot of images?

I am working on a site that will have over a hundred images
and I wanted to see what is the best practice for designing a site
like this. Should a go with xml(please give examples or
explanation), a text file or just loadMovie("image1project1.jpg",
"bottomsec") with named external images that will stay the same.
Any help is appreciated on staying up to date with this kind of
site.
Thanks,
Randy

ok I am new please be nice - I think I want to set it up like
this
<project1>
<section>Architecture</section>
<name>New Building for CREATiVENESS</name>
<comment>The major challenge to designing this new
tower was the site constraints a small 3 acre urban corner site.
It is located adjacent to a community center to facilitate extended
use in the evenings and weekends for the entire community.
</comment>
<thumb>thumbs/project1.jpg</thumb>
<img1>images/project1img1.jpg</img1>
<img2>images/project1img2.jpg</img2>
<img3>images/project1img3.jpg</img3>
<img4>images/project1img4.jpg</img4>
</project1>
<project2>
<section>Interiors</section>
<name>New Building for Me</name>
<comment>The major challenge to designing this new
tower was the site constraints a small 3 acre urban corner site.
It is located adjacent to a community center to facilitate extended
use in the evenings and weekends for the entire community.
</comment>
<thumb>thumbs/project2.jpg</thumb>
<img1>images/project2img1.jpg</img1>
<img2>images/project2img2.jpg</img2>
<img3>images/project2img3.jpg</img3>
<img4>images/project2img4.jpg</img4>
</project2>
<project3>
<section>Architecture</section>
<name>New Building for You</name>
<comment>The major challenge to designing this new
tower was the site constraints a small 3 acre urban corner site.
It is located adjacent to a community center to facilitate extended
use in the evenings and weekends for the entire community.
</comment>
<thumb>thumbs/project3.jpg</thumb>
<img1>images/project3img1.jpg</img1>
<img2>images/project3img2.jpg</img2>
<img3>images/project3img3.jpg</img3>
<img4>images/project3img4.jpg</img4>
</project3>
<project4>
<section>Interiors</section>
<name>New Building for that guy</name>
<comment>The major challenge to designing this new
tower was the site constraints a small 3 acre urban corner site.
It is located adjacent to a community center to facilitate extended
use in the evenings and weekends for the entire community.
</comment>
<thumb>thumbs/project4.jpg</thumb>
<img1>images/project4img1.jpg</img1>
<img2>images/project4img2.jpg</img2>
<img3>images/project4img3.jpg</img3>
<img4>images/project4img4.jpg</img4>
</project4>
but I am not sure of the way to create the way to run through
it to find if it is in a section to put it in the menu and then to
call the images and text once they are in a project area. I dont
know if the
this.firstChild.nextSibling.childNodes[0].childNodes[2]
is the best way to call things in the file. Any help is
appreciated. Please let me know what are the best practices and
easiest way to work with a large xml file.
Thanks,
Randy

ASM on SAN datafile size best practice for performance?

Is their a 'Best Practice' for datafile size for performance?
In our current production, we have 25GB datafiles for all of our tablespaces in ASM on 10GR1, but was wondering what the difference would be if I used say 50GB datafiles? Is 25GB a kind of mid point so the data can be striped across multiple datafiles for better performance?

We will be using Redhat Linux AS 4 update u on 64-bit AMD Opterons. The complete database will be on ASM...not the binarys though. All of our datafiles we have currently in our production system are all 25GB files. We will be using RMAN-->Veritas Tape backup and RMAN-->disk backup. I just didn't know if anybody out there was using smallfile tablespaces using 50GB datafiles or not. I can see that one of our tablespaces will prob be close to 4TB.

Is there a website or PDF somewhere which discusses best practices for producing a children's picture book? I am mostly interested in requirements for good image format, resolution, etc.

Is there a website or PDF somewhere which discusses best practices for producing a children's picture book? I am mostly interested in requirements for good image format, resolution, etc.

There may be a few links in Apple Support, regarding articles about how to use iBooks Author
and iBooks Store, etc; these would be separated into two general categories by device used.
Since there is an iOS and an OS X version of each, you may have to look to see what Apple
Support says about the one you are interested in; and how far their database goes toward an
answer to your question. Otherwise, a general search engine approach may be necessary.
Not sure if anything along the lines of what you seek would be available in an App.
References to iBooks Author and iBooks Store, etc appear within these two categories in Support:
For Mac OS X:
http://www.apple.com/support/mac-apps/
For iOS:
http://www.apple.com/support/ios/
Appears a community host moved your earlier post into one of the iBooks Author or Store sections
after I'd replied to what otherwise may be a similar post. Not sure if the links to the Discussions area
of iBooks you are interested in, have similar questions or answers by others who'd visited previously.
Is there a website or PDF somewhere which discusses best practices for producing a children's picture book? I am mostly interested in requirements for good image format, resolution, etc.
In my reply to your earlier thread, prior to it being moved, those links to sections of iBooks Author, etc
are posted. You can also find them from the main Apple Support Communities page.
Sorry to not be of much help in this matter.
Good luck & happy computing!

Best practice for exporting from iMovie '08 to iDVD

I am looking to find out what is the best practice for exporting from iMovie '08 to iDVD. I have read the other postings that give the basic howto (export to Media Browser then select the video in iDVD). However, my question is a little more technical. I have 1080i HD projects. I am interested in burning them to DVD in the best possible quality. What setting should I be using when I publish to Media Browser?
I am wondering about quality loss due to more than one conversion/compression. I suspect that when I export to the Media Browser then this is occurring. If I am not mistaken iMovie is using something like H.264 for this. Then, when I run iDVD I suspect it will it do another conversion/compression, I think to get to MPEG2. Not only could this result in a loss of quality but also it will take extra time. I am interested to know what others think about this.
Finally, I am looking to create DVDs for a lot of video. I am wondering if there are any USB or firewire hardware devices out there that could speed up the compression. I use the Elgato Turbo.264 when I want to encode to H.264 but I wonder if there is something similar for DVD creation.
Thanks in advance.

the standards for videoDVD are 720x480, and usually mpeg2 encoded..
so, your HiDef project HAS to be 'downsampled' somehow..
I would Export with Qucktime/apple intermediate => which is the 'format' your project is allready, and you avoid any useless 'inbetween encoding'..
iDVD will 'swallow' this huge export file - don't mind: iDVD cares for length, not size.
iDVD will then convert into DVD-standards..
you can 'raise' quality, by using projects <60min - this sets iDVD automatically to highest technical possible bitrate
hint: judge pic quality on a DVDplayer + TV.. not on your computer (DVDs are meant for TVdelivery)

Best practice for compressing images to uniform size?

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