Using Levels

1. is using the eyedroppers in the Levels window another way of dragging the input shadow and highlight sliders? OR are they doing something different?
2. Do you use both the eyedroppers and the sliders or is it one or the other?
Thanks.

In these screenshots the black point eyedropper is applied (at the position of the Color Sampler) and the three channels are subsequently affected differently.
One could drag the handles for the individual channels, but if you use the handle in the RGB channel it has different results.

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Learning to use Levels

I shoot a lot of underwater video and often the raw footage looks "murky" and has a greenish tinge that is corrected via Auto Levels. Is there some easy way to use the Levels effect, rather than auto levels so that you can easily match what Auto Levels is doing with the Levels effect? I've tried and it's really not that simple for me. I think I would have to correct the RGB channels first, just by sight on the tiny preview window in the Levels Setting. Then go to the green channels and monkey around some more via trial and error until I get something that looks OK.
can anyone give me some hints on how one would use levels to remove the cloudiness and green cast that many UW video clips have? Auto levels often just does this with many clips, which is why I tend to use it a lot.
P.S.
Can someone from adobe make the AUTO correctors in the adjust section of video effects GPU accelerated!

Here's a level's reference chart that should help you understand whats going on better. http://www.motionworks.com.au/2007/01/levels_guide/
Look at your RGB Parade in a reference monitor and watch what happens when you adjust 'em. Also mainly just adjust the input. The Output can really mush things up if used wrong.
Basically the adjustment on the left (when pulled right) pushes the picture into the shadows. Higher in the graph.
The one on the far right (when pulled left) pushes the picture into the highlights. Lower on the graph.
The middle, your gamma, shifts the middle or mids of the picture.
Also notices it doesn't shift the colors is pushes them. Hope this 'll start you in the right direction. Once you learn it and can go beyond just AUTO coloring and make your video looks way better.

Generating Parent Number using Level and Display Number

I am facing problem in generating parent number using level and dispaly number.
Here is the table structure
CREATE TABLE test(
DISPLAY_NUMBER       NUMBER,
LEVEL_NUM           NUMBER,
COMPONENT   VARCHAR2(10))
INSERT INTO test VALUES (1,1,'A');
INSERT INTO test VALUES (2,2,'B');
INSERT INTO test VALUES (3,3,'C');
INSERT INTO test VALUES (4,4,'D');
INSERT INTO test VALUES (5,3,'E');
INSERT INTO test VALUES (6,3,'F');
INSERT INTO test VALUES (7,2,'G');
INSERT INTO test VALUES (8,3,'H');Here is the output table structure and required output data format
CREATE TABLE test1(
DISPLAY_NUMBER       NUMBER,
LEVEL_NUM           NUMBER,
COMPONENT   VARCHAR2(10),
PARENT VARCHAR2(10))
INSERT INTO test1 VALUES (1,1,'A',NULL);
INSERT INTO test1 VALUES (2,2,'B','A');
INSERT INTO test1 VALUES (3,3,'C','B');
INSERT INTO test1 VALUES (4,4,'D','C');
INSERT INTO test1 VALUES (5,3,'E','B');
INSERT INTO test1 VALUES (6,3,'F','B');
INSERT INTO test1 VALUES (7,2,'G','A');
INSERT INTO test1 VALUES (8,3,'H','B');Oracle database version : Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
Thanks in advance.
Regards,
Laxman

>
I am facing problem in generating parent number using level and dispaly number.
>
Thanks for posting the table DDL and data. I called the tables testa and testb.
insert into testb
select a.*, (select component from testa b where b.level_num + 1
= a.level_num and rownum = 1) parent
from testa a
select * from testb
DISPLAY_NUMBER,LEVEL_NUM,COMPONENT,PARENT
1,1,A,
2,2,B,A
3,3,C,B
4,4,D,C
5,3,E,B
6,3,F,B
7,2,G,A
8,3,H,B

Using Levels in Aperture

In photoshop you can use level adjustments to select a point in an image to be absolute black and another to be absolute white. Is this possible in Aperture?
Thanks

Actually in the Exposure adjustments there are
droppers for black white and gray. Just use those
droppers to set your blacks and whites
Those do not set Black & White points in terms of levels - what they do is make whatever you click on neutral (grey) for either the lower third of the tonal range, or the upper third of the tonal range depending on which you use. The center one affects the whole tonal range. That's why they are labled "Tint".
You can however also use those droppers to get the same lines in the histogram as I had described with the White Balance control to get information on where pixels sit in the tonal range for information on where to set Levels.
At this juncture to improve clarity of discussion I think I should note that I have written an Adjustment Tool Guide that describes exactly how all the Aperture adjustment tools work and when they can be of use:
http://insideaperture.com/Site/AdjustmentToolGuide.html

Just updated from elements 11 to 13. When I try to use Levels in Elements 13. I click on the slider with my bamboo pen and nothing happens for a few seconds, sometimes not at all. This worked fine in Elements 11.

Just updated from elements 11 to 13. When I try to use Levels in Elements 13. I click on the slider with my bamboo pen and nothing happens for a few seconds, sometimes not at all. This worked fine in Elements 11.

Never mind my question on the photoshop elements 13 trying to install the camera raw update. It has been taken care of thank goodness!

HOW TO FILTER DIM VALUES USING LEVEL PARAMETER SCREEN BEFORE PRESENTATION

hello,
sorry but i did not understand your question - i don't know which objects is
the "Descriptor". Let me try to update you with some facts and a better example
of the situation - i will be also uploading some screen shots.
from the jdeveloper help we found the topic "Specifying the action for a step
object" which is very similar to what we want to perform. here follows the text
and also some comments from us:
Example: Using step actions Assume that a selection consists of the following
two steps:
Step A specifies the members: Boston, Chicago, and Denver
(comment: in our problem, step A is a selection of customers performed using
one of the 2 hierarchies of Customer dimension)
Step B specifies the members: Boston and Austin
(comment: in our problem, step B is another selection of customers performed
using the other hierarchy of Customer dimension)
Step B follows Step A.
The following list shows how the results of this selection differ depending
on the action that is
specified for Step B:
Step B action: SELECT -- Result: Boston and Austin (that is, only B is
included)
Step B action: ADD -- Result: Boston, Chicago, Denver, and Austin (that is,
the union of A and B is included)
Step B action: KEEP -- Result: Boston (that is, only members that are common
to both A and B are kept; also referred to as the intersection of A and B)
(comment: This is what we expect to have - the intersection of both customer
dimension selections goes to the row edge of the presentation)
Step B action: REMOVE -- Result: Chicago and Denver (that is, any members in
B are removed from the current selection )
how do i obtain this intersection ? is it possible to use this selection
combining both hierarchies ?
Please refer to the screen i will upload - it is the filter we need to apply.
the customer dimension has 2 levels above the leaf records in one hierarchy,
called "SETOR" and "ROTA" , and 3 levels in the other hierarchy, called
"SEGMENTO" , "CANAL" and "SUBCANAL"
thanks in advance

Hi Prasad,
I got your note, you should not use Session variable syntax to call presentation variable.
you should use like @{AIC_PROJ_PLAT_SEQ_NO}
One more thing: first test the variable AIC_PROJ_PLAT_SEQ_NO value then try to pass to SP.
Hope this helps

How to use levels in RDF Data Model?

I am working on RDF model, i am able to retrieve the queries base on subject or object....
i want to retrieve the data based on level. i could not get the query for that.
would you please advice me regarding solving this issue.
Thanks in Advance
Kamraj

Thanks for your response.
We are using Oracle Spatial RDF (Resource Description Framework).
We are able to retrieve the query based on Subject, Predicate and Object.
SELECT X,Y,Z
FROM TABLE(SDO_RDF_MATCH(
'(?X ?Y ?Z)',
SDO_RDF_MODELS('TESTDATASET'),
NULL,
SDO_RDF_ALIASES(SDO_RDF_ALIAS('',':')),
NULL))
WHERE( Y=':INDIRECT'OR O R Y=':DIRECT')
ORDER BY Y
We want to retrieve the triple (Subject, Predicate and Object) up to some level.
SELECT X,Y,Z
FROM TABLE(SDO_RDF_MATCH(
'(?X ?Y ?Z)',
SDO_RDF_MODELS('TESTDATASET'),
NULL,
SDO_RDF_ALIASES(SDO_RDF_ALIAS('',':')),
NULL))
WHERE( Y=':INDIRECT'OR O R Y=':DIRECT')
< level =5> -- want proper query to get the level
ORDER BY Y
Would you please help us to get the level based triples?.

Can I make basic adjustments to RAW files in PS the same way I do with jpgs using levels+clone tool?

I have basic knowledge of photoshop and normally just work with Jpegs. I need to edit some RAW files can I open them in Photoshop and work on them the same way as jpegs. I would only need to do some basic levels adjustments and use the clone tool. Is photoshop the best application to use for editing raw files?

Starting with RAW affords you more toning flexibility with white-balance and white/black points, and more sharpening and noise-reduction flexibility, than starting with JPGs where the camera has taken care of such things and the adjustments are baked in and cannot be changed.
The camera-raw plug-in for Photoshop is very good for working with individual raw files. If you are switching your photography from JPG to RAW then Lightroom has the same adjustments as the PS CR plug-in but is more efficient when working with many files compared to Bridge and Photoshop.
Personally, because I shoot only RAW photos, now, I switched from using PS/CR to LR quite a few years ago, and rarely go to PS anymore. Since you are used to PS, your old habits will probably still be with you, so you may find yourself doing a minimal amount of editing in CR.
Because you’re are dealing with RAW sensor data, you will want to pay attention to the WB and black/white points as well as sharpening and noise-reduction before opening the RAW files in PS for your normal PS adjustments.

Using LEVEL Pseudo column to format repeating frame

I am trying to display a hierarchy in Reports. I use the 'Connect By' Clause in SQL and gather the hierarchical data, and want to display the results in a tree fashion. How can I do it?
I only come up with one answer, to use the LEVEL PSEUDO-Column and indent the repeating frame based on the value for LEVEL. I want to know how I can set the X and Y co-ordinates of the repeating frame dynamically?
Please help me with this if you have other ideas?
Thanks.
-Shan

Unfortunately, you can't programmatically set the geometry (x,y, width, height) values of any objects in the reports output.
The best you can do is have another object (or number of objects) that are turned on/off and then use collapsing anchors and format triggers to move the repeating frame to the left. If you only have one object, you can set it's horizontal expansion to variable and then fill it with a number of characters to get the desired "indent".

Using levels in AS3

Hey, I'm trying to do a very simple thing in AS3 and it's not working
I have 2 movieclips, A and B. A have some animation and B have a single frame with a code. I want to use this code to play the animation in movieclip A.
When using AS2, i just write in the first frame of B, _root.A,play() or _level0.A.play()
What should I do in AS3 to achieve this. I attached the file, can anyone do the code for me and I can understand it by myself. Thanks

In this case do you really need to cast root as a MovieClip? I'm sure you would if you tried this: MovieClip(root).play(); But in this case you are trying to access the play method of A not root.
The reason for the casting thing (which I regard as a ghastly and completely bollocksed-up) is that in may cases parent or root could reference any number of items that are all decendants of DisplayObject so the property returns the item as a DisplayObject, which doesn't have the timeline control methods of the MovieClip class. DisplayObject is the ancestor from which all the things we can see spring.
As a design decision it might have been worse that parent or root returned a Sprite some times other times a Stage others a MovieClip and so on. Not saying that there isn't a better solution, but this is the solution we have...

Import using level format

Hi All,
Is there a way of importing a file to DRM, which is in the Generation/Level format?
Thanks in Advance.
Anindyo Dutta

Thanks for responding.
It is going to be additional overhead to convert the source file then.
CHeers!
Anindyo

Problem Using Levels

Hello ,
I'm new in Action script
I'm creating a site and i want to let the user to click a button and open a windows componenet that will load a movieclip that will content a Loader that will load an external image
my problem is that I want to set the contentpath of the loader dynamically
so i create a global variable and it works well , my problem is how to set the contentpath with this value
how to get the reference on the loader , i have tried alot of things many times but when i try to trace the values , i'm always get undefined value
please if any one can help i will be thankful
best regards
Amira

show your code related to this issue.

Use of New logical Level Key in OBIEE

Hi all,
can anybody tell me what is the use of newlogicallevel key in hierarchies(OBIEE).
why we need to set a newlogical level key for each level in hierarchies.
pls explain in detail....
regards
bharath

You may get info as below if you use Admin tool help file
Level keys. Each logical level (except the topmost level defined as a Grand Total level) needs to have one or more attributes that compose a level key. The level key defines the unique elements in each logical level. The dimension table logical key has to be associated with the lowest level of a dimension and has to be the level key for that level.
A logical level may have more than one level key. When that is the case, specify the key that is the primary key of that level. All dimension sources which have an aggregate content at a specified level need to contain the column that is the primary key of that level. Each logical level should have one level key that will be displayed when an Answers or Intelligence Dashboard user clicks to drill down. This may or may not be the primary key of the level. To set the level key to display, select the Use for drill down check box on the Level Key dialog box.
Be careful using level keys such as Month whose domain includes values January, February, and so on—values that are not unique to a particular month, repeating every year. To define Month as a level key, you also need to include an attribute from a higher level, for example, Year. To add Year, click the Add button in this dialog and select the logical column from the dialog that is presented.

Exposure vs. Levels: Differences in Practical Use

I would like to better understand the differences between the Exposure control in the Exposure Adjustment section and the White, Gray and Black Levels sliders in the Levels Adjustment section. For example, I am working on a Raw-format image that is somewhat over-exposed. The Exposure control allows me to force it down by about 6/10 of stop, which seems to do a nice job of adjusting overall exposure, and the results are obvious on the histogram. What I'm not clear on is whether I can achieve the same effect using only the Levels adjustments. I know how to set white and black points in Levels, and understand that the gray level adjusts overall brightness, but is there a way to control exposure with levels or are they two different facets of raw adjustment?

They are two different aspects.
In general, raising the exposure by a stop raises the values of all pixels by the same amount -- say one stop.
If you are familiar with the zone system, then using exposure to change something that is neutral grey (zone 5) and making it white with detail (zone 7), should also pull things that are black (zone 3) to neutral grey (zone 7).
Using levels should not do this -- it is effectively setting black and white points, and it ends up increasing contrast at the same time (because, you could take a low contrast shot, where the histogram was very compressed, and use levels to ensure the photo has a true black point and true white point, thus increasing the dynamic range of the shot).
This is a fairly vague description -- but the way levels and exposure tools work is fairly well detailed, though you'll find a larger breadth of documentation that uses Photoshop as the medium.

Okay to use both Exposure and Levels?

Is it okay to routinely use both the exposure settings (exposure, recovery, black point, and brightness) and levels on the same image?
I feel that since they overlap in function, I would be canceling or negating the effect of one if I use the other.
But many times, I need to use the recovery and black point sliders to recover my highlights and shadows but prefer to use levels because it is more powerful.
Or should I just use one or the other?
Thanks.

It really doesn't matter - as long as the result is what you are after and the image looks good. Most of the time the levels controls are not required even for what you are describing.
RB

Using Levels

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