How do you convert a negative digital image to a positive?

When I scanned some of my slides they turned into negatives. How can I get them back to positive images?

As I recently discovered, you actually can create a negative using Aperture , with the "Curves" controls.
Add a "Curves"-Brick from the "Adjustments"-drop down menu,
set the channel to RGB,
and invert the RGB curve by dragging the left handle upward and the right handle down.
This will invert the mapping of the luminance - black to white and white to black.
Cheers
Léonie
P.S. But thanks for pointing out my quartz filter action!

Similar Messages

How do you convert channels.dvb to channels.conf

Title says is all. How do you convert the kaffeine file channels.dvb to a channels.conf file which can be used by mplayer.
The winterhill transmitter in the UK is now totally digital, since the change over I've not been able to get BBC channels properly in mplayer. The receiver is a Freecom DVB-T USB. I've manually edited the uk-WinterHill file with the transmitter info to update it and used it to create a channels.conf file.
scan /usr/share/dvb/dvb-t/uk-WinterHill > /home/~/channels.conf
This picked up pretty much all the channels & I can tune into BBC channels but receive no picture. I've googled a bit and it seems other people have this problem too and they think it's a problem due to the increased power of the signal after the change over to digital. I've tried a variable attenuator which did no good.
I've now found that kaffeine can scan for and find the BBC channels AND it can also play them back properly. So the theory about the signal strength being too much for the freecom sticks attenuator is probably a load of guff, at least in my case.
The data for BBC One from the kaffeine channels.dvb is:-
TV|BBC ONE|101(2)|102(eng),106(eng),|0|4168|4168|Terrestrial|802000|0|v|-1|-1|-1|-1|8|-1|-1|-1|45|105(16)(1)(1)(eng),||9018|-1|0|
The same data from the mplayer/scan channels.conf is:-
BBC ONE:802000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:101:102:4168
I really don't want to keep kaffeine installed and any links or info that would help convert these channel data files would be greatly appreciated. Seems there are ways to convert them the other way round, but so far I've found nothing to do it fron channels.dvb to channels.conf
Last edited by Nixie (2009-12-17 08:42:56)

Do you want to capture a single frame of the video as a separate image? You can play the video full screen in QuickTime, pause it at the appropriate frame and take a screenshot using shift-command-3.
Matt

How do i convert my scanned jpg images into word

How do i convert my scanned jpg images into word

No, Acrobat Pro is expensive
95% of all the professional scanned in books are in PDF, the entire structure and countless years of work have gone into Acrobat being not just the "best" standard for scanned books, but really the ONLY standard for them.
Yes, many many little programs can convert to PDF after you have them in a file, or even from Safari you can "print as PDF" or "save as PDF"
however it just saves them as PDF, and you can use Acrobat READER for free,....
but Reader is just that, a reader, you cannot do pro editing, scale down the file size etc etc, signatures, portfolios etc.
Ive got a 42 Terabyte collection of PDF books,.....Ive spent too much time staring at PDF books LoL.

HOW DO YOU CONVERT IPHOTO 8.1 TO APERTURE FILE FORMATT

how do you convert iphoto 8.1.2 photos to aperture file formatt?

I believe this is still possible if the iPhoto library has not been up graded.
No joy, Frank. This is what I get, when I try to import an older iPhoto Library into Aperture 3.4.3 using "File > Import > Library":
Aperture 3.4.x insists on the library being converted to 9.4.x. To be able to import earlier iPhoto Libraries you would have to fall back on Aperture 3.2.x; temporarily install a second, older Aperture version, create a new Aperture library with this version, import the iPhoto Libraries, then open this Aperture library in Aperture 3.4.3 to convert it to a current version.
bertpa, how many iphoto photos are we talking abourt? If you are having several iPhoto libraries with thousands of edited photos, it really would be worth it to upgrade to iPhoto 9.4 to convert your libraries. iPhoto 9.4 will convert your library to a format with Master-version pairs like aperture uses. If you import this to Aperture, you will be able to import each edited image as a single image with two versions (original and edited)- importing from previous iPhoto versions you would be importing each edited image as two separate images - an edited image and the original. This would be wasteful, if you have many photos in Aperture, and it would cause a lot of additional work to get these duplicates sorted out. But if you only have a handful of iPhoto images, launch iPhoto and use the "File > Export" command to export your photos from iPhoto to a folder. You will have to do it twice - once to export the originals and once to export the edited versions. Then import your exported iPhoto photos into Aperture.
Regards
Léonie

How do you convert a Modbus Datatype TIME in Lookout

How do you convert a Modbus Variable with a Datatype of TIME in a Lookout Expression to display MMS.

The URL provided above must be an internal N.I. link - for us folks on the outside it's
http://digital.ni.com/public.nsf/allkb/1A3BB7B3299C11C78625680C004DA744
I use a time_to_word function in the modicon when I need to display a data type of time in Lookout. What you get when looking at the register with the modbus object in Lookout is the time in msecs - just divide by 1000 to get the seconds. But you must 'build' the display for minutes, hours, etc. The numeric displays in Lookout are not
based on seconds, they are based on days as the above knowledge base article indicates. The following will work on a word read from the modicon, and may or may not work with a data type of time. The expression
(Modbus1.400001/86400000)
first takes the number in msecs and divides by the number of msecs in a day. This puts the number into a fraction of a day that Lookout can then display using the numeric formats such as "HH:MMS". I know it’s a little clumsy to divide that number for every time value – but hopefully you don’t have a lot of these expressions. Hope this helps.

How do you convert a ages file to a jpeg file?

How do you convert a ages file to a jpeg file?

If your .pages file pre-exists, you can open it directly in Preview. With thumbnails enabled in Preview, you can subsequently select the page you want to export as an image.

How can you convert a PDF File into a picture format for uploading?

How can you convert a PDF File into a picture format for uploading?

If you have Acrobat 11, you'd select: File > Save As Other > Image
and select one of the available image formats.

How do you convert a PDF document to a word document ?

How do you convert a PDF document to a word document ?

I just noticed that you added a few more details and it seems like the problem is that part of the conversion is not working. Would it be possible to share the file with me so that I can forward it to the team that owns that service? My email address is [email protected]
Thanks!
Pat

How do you make an array of image icons and then call them?

How do you make an array of image icons and then call them, i have searched all over the internet for making an array of icons, but i have
found nothing. Below is my attempt at making an array of icons, but i cant seem to make it work. Basically, i want the image to match the value of the roll of the dice (rollVal)
Any help would be greatly appreciated, some code or link to tuturial, ect.
/** DiceRoller.java
* Roll, print, Gui
import javax.swing.*;
public class DiceRoller extends JFrame
     private ImageIcon[] image ;
     public String[] images = { "empty", "dice1.jpg",
               "dice2.jpg", "dice3.jpg", "dice4.jpg",
               "dice5.jpg", "dice6.jpg" };
     public Dice die;
     private int rollVal;
     public int rollNum;
     private JLabel j1;
     public DiceRoller(){
          j1= new JLabel("");
       die =new Dice();
       int rollVal;
       rollVal = die.roll();
       image = new ImageIcon[images.length];
     for(int i = 0; i < images.length; i++){
      image[i] = new ImageIcon(images);
     if (image!=null){
          j1.setIcon(image[rollVal]);
     System.out.println("Roll = "+die.roll());

Demo:
import java.awt.*;
import java.net.*;
import javax.swing.*;
public class IconExample {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable(){
            public void run() {
                launch();
    static void launch() {
        try {
            Icon[] icons = new Icon[6];
            for(int i=0; i<icons.length; ++i) {
                String url = "http://www.eureka-puzzle.be/cast/images/dice" + (i + 1) + ".jpg";
                icons[i] = new ImageIcon(new URL(url));
            display(icons);
        } catch (MalformedURLException e) {
            throw new RuntimeException(e);
    static void display(Icon[] icons) {
        JPanel cp = new JPanel();
        for(Icon icon : icons) {
            cp.add(new JLabel(icon));
        JFrame f = new JFrame();
        f.setContentPane(cp);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
}

How do you convert a PDF to Word or Excel in Acrobat 9 Pro?

How do you convert a PDF to Word or Excel in Acrobat 9 Pro?

Refer to Acrobat 9 Help PDF (installed with Acrobat 9 is installed).
Review the discussion for Exporting PDFs in Chapter 5 of this Help PDF.
The PDF is also available on Adobe's site.
http://help.adobe.com/archive/en_US/acrobat/9/professional/acrobat_pro_9.0_help.pdf
Good to know is that the Acrobat 9.x product family passed into End of Support mid-year 2013.
Be well...

How do you convert a jpeg file into word document so i can edit it?

How do you convert a jpeg file into word document so i can edit it?

http://office.microsoft.com/en-us/mac-word-help/training-edit-pictures-in-office -for-mac-2011-RZ103709558.aspx

How do you convert an Autocad drawing into a pdf with Acrobat X Standard?

How do you convert an Autocad drawing into a pdf with Acrobat X Standard?

Something to try -
Having installed Acrobat Standard you have the Adobe PDF virtual printer installed.
From your authoring application do a "file-print" and select the Adobe PDF printer rather than the attached local or network printer / plotter.
Be well...

How do you pan and/zoom an image--the "Ken Burns" effect?

How do you pan and/zoom an image--the "Ken Burns" effect?

Frequently answered question
Cheers
Eddie
Forum FAQ
Premiere Pro Wiki
- Over 250 frequently answered questions
- Over 100 free tutorials
- Maintained by editors like
you

How do you convert a jar file into a java file, ?

how do you convert a jar file into a java file ?
I am new to Java ,but have a little experience in C++ and Visual Basic.
I want to edit and maybe create my own mobile games that are written or converted into jar files.
At the moment I am using Java NetBeans , and Easy Java( the java pad).
However the only solution I tried was to open the JAR file in winrar and see that its made up of png picture files,
midi music files and class files. Unfortunately when I uncompressed the JAR file , there was NO java file to be seen and the JAVA editors Do not show the class file like a Java file. So why is there no extension Java file in the mobile JAR game ?

801283 wrote:
how do you convert a jar file into a java file ?You generally don't. There exist decompilers, but if you're meant to have the source, you should either have it because you are the author, or you should be able to get it from the author.
I am new to Java ,but have a little experience in C++ and Visual Basic.Does that experience include turning .exe files into C++ code? Because that's the equivalent of what you're asking
I want to edit and maybe create my own mobile games that are written or converted into jar files.Eh?
Are you saying you want to take existing games and modify them? If the creators allow you to modify their source, then they'll provide you with that source (the .java files). If you're allowed to add things but not modify, you don't need .java files. Just documentation, which, again, the creators should be providing.
Or are you saying you want to create your own games and distribute them in jar files? If so, there's no need to turn jars into .java.
However the only solution I tried was to open the JAR file in winrar and see that its made up of png picture files,
midi music files and class files. Unfortunately when I uncompressed the JAR file , there was NO java file to be seen and the JAVA editors Do not show the class file like a Java file. So why is there no extension Java file in the mobile JAR game ?Why would you expect there to be one?

How do you convert a quotation into a purchase requisition?

How do you convert a quotation into a purcahse requisition?

Hi Ganesh
But from ME51N in shows selection varaint it show RFQ for creation of Requisition but when you drop the RFQ to header for creation , it is not working..
Chek again.
Kishor
Hi Christopher
See Purchase requisition creation can happen without vendor and price details as well.
so once you have finalised your vendor and price ,you can put the vendor and price details in PR and then PR can go further for approval...there will be some manual work ,,but I do not think any more option available.
hope its logical,.
Kishor

How do you convert a negative digital image to a positive?

Similar Messages

Maybe you are looking for