100% view while comparing two images

I view the original and a working copy on my display and enlarge both with the "Z" key to 100%. Unfortunately they are not in synch meaning I do not see the same crop from each picture. How can I lock both images the way I can see the same area of both when I am moving one of them around?

Help partially, thanks, but..
WHen i have both images in 10%% and press/hold shift key then I can move around synched, that's fine, however, when I have both images on display and press "Z" to view at 100% the images are not in synch - that's the important part.

Similar Messages

How do we compare two images in labview?

I have created a back end code which is comparing two images using LABVIEW.i have used a comparator and put a tolerance factor which will help me filter out almost same images.the problem i am facing is that on subtraction of the given two images i am getting a completely random output with noise surrounding the parts of the image which are being compared.Also the tolerance percentage i have given has not been working very effectively.Kindly let me know if there is an easier solution to my task or what needs to be done
Thank you

Can you post your code?
Randall Pursley

How to compare two images through golden Template analysis?

hi,
How to compare two images through golden Template analysis?
Regards
Dibya

Hi Dibya,
you can skip the pattern matching part if it's not interesting to you. Only look at the "GoldenTemplate"-part.
I can't (and will not) look at the example in more detail, but generally such examples are given with block diagram...
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Compare two images

Hai Java Guys,
How to compare two images using java.If any thing different at any place ,we have to give details of that pixel.It is GIS project.If anybody know solution for this plz let me know.Thank you in asdvance.
Basha

If the two images are represented as java.awt.Images and have the same scale you can use the java.awt.image.PixelGrabber to obtain an array of the pixel values for each image. Compare the values of these two arrays, and you know where in the images you have differing pixels.

Comparing Two Images

Hi All,
I need to compare two images to detect if they are identical. This algorith
needs to work for gray scale and colour.
What I have done for gray scale is use a compare function (with clear if =)
and then perform a histrogram function on the resulting image. I then check
the distrubution of the 1 to 255 elements to see if they have any pixels.
If they do I know the images are not the same.
With a colour image I perform the compare function on each colour. Add the
resulting images and then run the histogram method.
This function seems to work OK but I can't help thinking there must be an
easier methode for achieving this.
Does anyone have any ideas?
Thanks.
Denis

Hi Brent,
thanks for your input. I implemented your method and it works fine.
However I did some timing test and came up with the following observations:
Method 1 Method 2
8bit Images Fastest
16bit Images Fastest
Float Images Fastest
Complex Image --- Not Supported ---
RGB Image Equal Equal
HSL Very Slow Not Supported
I find it interesting that the method I suggested typically executes quicker
then the one you suggested. Additionally my method supports HSL (this might
not be important - I've never had to use HSL.
I have include these finding for your benefit, and anyone else that might
have an interest in this t
opic.
I have included my source code in case anyone would like to look at it. If
anyone has any thoughts or alterations, I would be interested in hearing
them.
Thanks
Denis
[Attachment Test.llb, see below]
Attachments:
Test.llb ‏184 KB

How to compare two images

hey frens..i m building a motion detector in java....the problem is this, i have two bufferedimages from webcam...these are consecutive images taken from webcam...i need to compare these two images to check for any changes....i have no idea how to do this...i m trying getRGB() method for this purpose but i think i m not correctly applying it....
so if anyone have any idea how to do this..plzz reply...

Take the RGB value from the second image and subtract it from the first.
If the values are the same, the result will be 0 (or black). If the values are different the result will be 0 < x < 255 and the result will be closer to white.
This works really well for black and white images.

How to compare two images and display the difference on Front Panel

HI..
I have attached two images.
I want to compare these two images and subtract the differenc from these two images and display the difference(the mouse) on the front panel
Anyone can help me?
Really thanks
Attachments:
IMG_2117.JPG ‏1677 KB
IMG_2118.JPG ‏1650 KB

The missing thing. You have to keep in mind that what you see is not the same as the camera sees.
So when using IMAQ Substract it gives you the difference of the value of every single pixel!
In order to find the mouse as only difference you have to manage that every other pixel value stays the same, e.g. with a proper lightening.
At the other hand you can combine different filters or alogorithms to get the object, e.g. if the object is darker or brighter then everything else in the image you could use a threshold and then use morphologic operations to get the objects size and position.
Christian

Comparing two images with Imaging Lingo

Hi everybody!
Here's the deal: I have two grayscale images and I want to
find out where they match the closest. I want to compute the
difference between the two and find the spot with the least
difference.
So I copy one into the other with the #ink: 38 ("subtract")
and wherever is the darkest spot the images are closest alike.
Right? Wrong!
When Director subtracts one color from the other and the
result is below 0, Director adds another 256 so the result is
always between 0 and 255. When I use "subtract pin" the result is
almost completely black, so this doesn't help as well. I thought
about simulation high dynamic range images with some stupid hacks
but to no avail.
Where am I thinking wrong? Can I compute the difference with
Imaging Lingo? Any help is greatly appreciated.

Here's an idea: use reverse ink to copy one image onto the
other. The areas which are most nearly white in the resulting image
will be the closest match. You can adapt the code found at
nonlinear.openspark.com
to isolate the pixels that are nearly white.

Problem while comparing two internal tables

I have to modify work start date which are initial in the data base table for the records in the flat file.
my code is:
REPORT ZAUFK_WORKSTARTDATE_UPDATE .
Tables Declaration
TABLES: AUFK.
Type pools Declaration
TYPE-POOLS : SLIS.
Internal Table Declaration
DATA: I_AUFK LIKE AUFK OCCURS 0 WITH HEADER LINE,
 IT_AUFK LIKE AUFK OCCURS 0 WITH HEADER LINE,
 ITAB1 LIKE ALSMEX_TABLINE OCCURS 0 WITH HEADER LINE.
DATA: BEGIN OF I_AUFK1 OCCURS 0,
 AUFNR(12),
 AUART(4),
 END OF I_AUFK1.
Data Declaration
DATA I_FIELDCAT TYPE SLIS_FIELDCAT_ALV OCCURS 0.
DATA WA_FCAT LIKE LINE OF I_FIELDCAT.
DATA: B1 TYPE I VALUE 1,
 C1 TYPE I VALUE 1,
 B2 TYPE I VALUE 256,
 C2 TYPE I VALUE 65536.
Selection Screen Declaration
SELECTION-SCREEN BEGIN OF BLOCK B1 WITH FRAME TITLE TEXT-001.
PARAMETERS: P_FILE LIKE RLGRAP-FILENAME.
SELECT-OPTIONS: S_AUFNR FOR AUFK-AUFNR,
 S_AUART FOR AUFK-AUART.
PARAMETERS: P_USER7 LIKE AUFK-USER7 DEFAULT '20070101' OBLIGATORY.
SELECTION-SCREEN END OF BLOCK B1.
SELECTION-SCREEN BEGIN OF BLOCK B2 WITH FRAME TITLE TEXT-002.
PARAMETERS: R1 RADIOBUTTON GROUP G1 DEFAULT 'X' USER-COMMAND UCOMM1, " Upload using File Path
 R2 RADIOBUTTON GROUP G1. " Uplaod using particular IO's
SELECTION-SCREEN END OF BLOCK B2.
To get F4 Help for File path on selection screen.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_FILE.
CALL FUNCTION 'F4_FILENAME'
 EXPORTING
 PROGRAM_NAME = SYST-CPROG
 DYNPRO_NUMBER = SYST-DYNNR
 IMPORTING
 FILE_NAME = P_FILE.
To disbale the filepath when r2 radiobutton is selected
AT SELECTION-SCREEN OUTPUT.
LOOP AT SCREEN.
Check if R1 is checked
IF R1 = 'X'.
 IF SCREEN-NAME = 'S_AUFNR-LOW' OR
 SCREEN-NAME = 'S_AUFNR-HIGH' OR
 SCREEN-NAME = 'S_AUART-LOW' OR
 SCREEN-NAME = 'S_AUART-HIGH'.
Make the Internal order number and order type field disable from the selection screen
 SCREEN-INPUT = '0'.
 MODIFY SCREEN.
 ENDIF.
ELSEIF R2 = 'X' AND SCREEN-NAME = 'P_FILE'.
Make the file path field disappear from the selection screen
 SCREEN-INPUT = 0.
 MODIFY SCREEN.
 ENDIF.
ENDLOOP.
Start of executable code
START-OF-SELECTION.
To get the relavent IO data from the order master data table
SELECT *
 FROM AUFK
 INTO TABLE I_AUFK
 WHERE AUFNR IN S_AUFNR
 AND AUART IN S_AUART
 AND ( AUART = '5200' OR AUART = '5500'
 OR AUART = '5700' OR AUART = '8500'
 OR AUART = '8700' ).
Table must be updated using flat file
IF R1 = 'X'.
To Upload Excel sheet data into an internal table
 CALL FUNCTION 'ALSM_EXCEL_TO_INTERNAL_TABLE'
 EXPORTING
 FILENAME = P_FILE
 I_BEGIN_COL = B1
 I_BEGIN_ROW = C1
 I_END_COL = B2
 I_END_ROW = C2
 TABLES
 INTERN = ITAB1
 EXCEPTIONS
 INCONSISTENT_PARAMETERS = 1
 UPLOAD_OLE = 2
 OTHERS = 3.
 IF SY-SUBRC <> 0.
 MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
 ENDIF.
To organize the data in the internal table(excel data) as per our requirement
 PERFORM ORGANIZE_UPLOADED_DATA.
 LOOP AT I_AUFK1.
Comparing the excel data and the database table data
 READ TABLE I_AUFK WITH KEY AUFNR = I_AUFK1-AUFNR.
 IF SY-SUBRC EQ 0.
Check if the the work start date is initial(blank)
 IF I_AUFK-USER7 IS INITIAL.
If work start is initial move the value in p_user7 to the work start date field in i_aufk
 MOVE P_USER7 TO I_AUFK-USER7.
 MODIFY I_AUFK.
Moving the data which is changed into it_aufk internal table(this table is for displaying the updated records)
 MOVE-CORRESPONDING I_AUFK TO IT_AUFK.
 APPEND IT_AUFK.
 ENDIF.
 ENDIF.
 ENDLOOP.
endif.
WA_FCAT-FIELDNAME = 'AUFNR'.
WA_FCAT-TABNAME = 'I_AUFK'.
WA_FCAT-SELTEXT_M = 'Internal Order Number'.
WA_FCAT-OUTPUTLEN = 12.
APPEND WA_FCAT TO i_fieldcat.
WA_FCAT-FIELDNAME = 'AUART'.
WA_FCAT-TABNAME = 'I_AUFK'.
WA_FCAT-SELTEXT_M = 'Order Type'.
WA_FCAT-OUTPUTLEN = 4.
APPEND WA_FCAT TO I_FIELDCAT.
WA_FCAT-FIELDNAME = 'KTEXT'.
WA_FCAT-TABNAME = 'I_AUFK'.
WA_FCAT-SELTEXT_M = 'Description'.
WA_FCAT-OUTPUTLEN = 40.
APPEND WA_FCAT TO I_FIELDCAT.
WA_FCAT-FIELDNAME = 'USER7'.
WA_FCAT-TABNAME = 'I_AUFK'.
WA_FCAT-SELTEXT_M = 'Work Start Date'.
WA_FCAT-OUTPUTLEN = 10.
APPEND WA_FCAT TO I_FIELDCAT.
Updating the AUFK(Internal Order Data Table) using i_aufk
*MODIFY AUFK FROM TABLE I_AUFK.
Check if the database table is modified
*IF SY-SUBRC = 0.
Display the modified data
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
 I_CALLBACK_PROGRAM = SY-REPID
 I_GRID_TITLE = 'List of updated Records'
 IT_FIELDCAT = I_FIELDCAT[]
TABLES
 T_OUTTAB = IT_AUFK[]
EXCEPTIONS
 PROGRAM_ERROR = 1
 OTHERS = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
*ENDIF.
ENDIF.
*& Form ORGANIZE_UPLOADED_DATA
 text
FORM ORGANIZE_UPLOADED_DATA .
SORT ITAB1 BY ROW COL.
LOOP AT ITAB1.
 CASE ITAB1-COL.
 WHEN 1.
 I_AUFK1-AUFNR = ITAB1-VALUE.
 WHEN 2.
 I_AUFK1-AUART = ITAB1-VALUE.
 ENDCASE.
 AT END OF ROW.
 APPEND I_AUFK1.
 ENDAT.
ENDLOOP.
LOOP AT I_AUFK1.
CONCATENATE '000000' I_AUFK1-AUFNR INTO I_AUFK1-AUFNR.
MODIFY I_AUFK1.
ENDLOOP.
ENDFORM. " ORGANIZE_UPLOADED_DATA
The bold are is were i'm facing problem. Please help me .its urgent.

Hi try using the below code...
LOOP AT I_AUFK1.
Comparing the excel data and the database table data
READ TABLE I_AUFK WITH KEY AUFNR = I_AUFK1-AUFNR.
IF SY-SUBRC EQ 0.
Check if the the work start date is initial(blank)
IF I_AUFK-USER7 IS INITIAL.
If work start is initial move the value in p_user7 to the work start date field in i_aufk
MOVE P_USER7 TO I_AUFK-USER7.
[b]MODIFY I_AUFK from i_aufk transporting user7.
Moving the data which is changed into it_aufk internal table(this table is for displaying the updated records)
MOVE-CORRESPONDING I_AUFK TO IT_AUFK.
APPEND IT_AUFK.
ENDIF.
ENDIF.
ENDLOOP.
endif.
if you can't still solve some more questions
what is teh sy-subrc of teh read ..
what does the header line contain after teh read
and what happens after modify.. does the contents change?

How can i compare two color images in vision builder for AI?

What i want to do is to compare two images. I have a base color image that represents the desired colors and tones. I have another image to be compared to the base image. What i want to do is to compare this two images to know how close they are regarding contents of color and tones. In other words, i want to know how close is image 2 to image 1 (base sample)....
I would like to know how to get the content of certain colors in an image and then compare this values with the same values from another image.
For example..i have two sheets of paper that contain various mixed colors...i want to know the amount of green, red an blue in each image and then comapre this values.
What i want to do is to compare difer
ent samples of fabrics. this fabrics must be of a specified color...but due to the process they may vary in tone or even color...so i want to compare this fabrics to a amster sample to see how close they are in color and tone..
Anything would help since i dont have experience in this type of comparisons...thanks

VBAI allows you to work with grayscale images only. You can acquire an image, use the vision assistant to convert it grayscale by extracting the luminance plane (or any of the other color planes) and then analyze the resulting grayscale image. To do what you are talking about, though, it would really be better to get Vision for labview. You could then take color images, compare color plains, use statistical functions to determine average color values, and so on.

How can I compare two collections at the same time? (View two grid views)

I have two collections containing some of the same images. (My Nikon D70 did not put an end-of-file on some images. I recovered them into a different collection.) Now I want to display both collections side-by-side in grid view. I will select those images in the "recovered" collection that correspond to the bad images in the "main" collection, add the ratings etc, and move just these to another collection.
It is extremely frustrating to have to bounce back and forth between collections, remembering each image one by one and selecting it in the "recovered" collection. (The image names are not preserved in the "recovered" collection -- I have to go by what the image looks like.)
LightRoom allows me to compare photos in the compare view. I want to compare collections in two grid views.

CaptureTheLight,
you have ran into a situation when you have to compare two sets of images and now you're wondering how come Lightroom doesn't have such "obviously necessary" functionality? But you have to admit it, this is not such a common situation in a photographer's workflow recovers broken files and tries to compare them against themselves. I think it's a pretty specific feature you need. Still, Lightroom has enough powerful tools for editing and sorting images.
For example...
You could just put them all - "main" and "recovered" - into a single collection or into the Quick Collection. Label the entire "recovered" collection with, say, red and sort by capture time. Now you'll have everything side by side, ordered chronologically. The "recovered" images will stay next to the "main" images since their capture time will be the same, and they will also stand out since they have the red label.
Make the thumbnails bigger and set up the grid view so it tints the thumbnail cell are tinted with the label color. Now, you can go quickly through them visually checking labeled vs unlabeled.

Images XOR, AND, etc... logical operators to compare two distinct objects

is there a way of comper two images without comparing all it bytes...
the problem: actually I�m parsing the values of the bytes of the two images and then comparing it...
idea: if I have the two byte arrays containing the image info.. may I use a logical operator to compare these objects ??

FelipeGaucho again,
Did you come up with an optimized method for logical operators? I actually want to perform the boolean operations to turn most pixels of an image to zero, then compress that (as in your post 'String compressor II'). Are these two posts related for you as well? They are separated by several months.
abnormal,
I'm assuming that Java's classes would be optimized, but if my code will execute at the same speed as theirs, then I guess I can stop searching for optimized (or already provided) classes. Do you know if Java's provided classes run faster than classes we create? I'm going to test the provided System.arraycopy against my own while waiting for a reply.

Loupe view caching- not even two images?

Is there a way to adjust how many previews are kept in RAM for the loupe?
I've found that most of the time I can't even bounce between two images without waiting for several seconds for the image in the loupe to appear. This is on a first-generation macbook pro with 2GB of ram, no other open applications, and 20GB of disk space free (and just defragmented.) The preview quality slider is set to the middle position. I shoot exclusively in RAW and upgraded recently from a 10D to a 40D; I'm guessing that Aperture only allocates a fixed amount of memory to storing previously viewed images, and the larger 40D images are too big for the default settings.
Sometimes I can go through three images without seeing the "loading" prompt; other times, I hit the arrow keys back and forth between two images, not even moving the mouse to compare two shots, and see "Loading..." for long enough that I can't make a visual comparison between the two images for finer detail. In one word: useless.
Is this a restriction of VRAM? System memory? Graphics processor in the original MBP? Pure "policy" in software, ie, "we will use 40MB of memory to cache previews"? Anything that can be changed via 'defaults'?

Janet,
The loupe is "smooth" panning around the image (except after more than 1-2 adjustments are applied, then it rapidly deteriorates.) The issue is switching between two photos rapidly to compare details such as "who's looking which way" and "what is in focus." I can sit for 20 seconds or more flipping between two images next to each other in the strip, and each time "Loading..." will appear and the loupe will be blank.
I just tested it on a Core2 MBP (2.3ghz, 2GB), and received different behavior. The "loading" delay happens once or maybe twice, then I can repeatedly swap between two images with no "Loading", but two is the limit- seeking to a third causes the first image to drop out of the 'cache'. The newer system has only about ten photos in it; the older system has almost 20GB of 10D images and another ~2-3GB of 40D images. I'm not entirely sure how valid the comparison is, then.
Both systems have 256MB of VRAM, and both are the Radeon X1600 (which is curious- I expected the Core2 machine to have a newer card. I guess it's one of the very early Core2 machines. I wonder if they simply bumped up the clock speed- the original MBP's X1600 was intentionally downgraded by Apple in clockspeed.)
I'm not using sRGB space- I shoot everything raw and have always set my cameras for Adobe RGB. I'm not a new user of Aperture, so I'm aware of thumbnail/preview building etc. I've tinkered with it on other people's machines since v1. I've never witnessed an Aperture crash, but I've only played maybe once or twice a month.
I've also noticed the quality of display in the main viewer window to be exceptionally poor with images from the 40D; it seems very fuzzy, and almost like it's up-sampled from a low resolution version. Sharp edges are very oddly (and poorly) aliased; almost like Aperture is using the preview image from the camera, instead of building its own.
Another thing: sharpness on exported JPEGs, both full size and scaled down,seems downright lousy. Odd...a couple of versions ago, they were too sharp, it seemed.

Compare two records within a view

Hi,
I wonder if it is possible to compare two or more records within a view, and how to do it.
Thanks in advance.

M. Comi wrote:
I wanted to compare two records of the view and see if they are the same or not...
My data are as follows:
Soglia Ingresso_CL_PF 10 10
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I want to check if the "downgrade" records have the same values for the second and the third column, and in this case replace the values on the second record.
But I did it with a select on the same fields of the original tables, plus two fields obtained with lag function...
I don't know if it is clear or not, the important is that I got what I wanted.Sorry, it's not clear.
Are you still having a problem? If so:
(1) Please describe the problem.
(2) What results do you want to see from the sample data you posted?
(3) Is the second column of
Downgrade MDP 3 2102 2101'Downgrade', 'MDP', 3, 2102, 2101, some combination, or NULL? When posting data, the most helpful thing is to post INSERT (or CREATE TABLE AS ...) statements. The second-best thing is to post formatted data. Type {code} before and after sections where spacing is important, and post column headers.

I want to convert two image files into strings and than to compare them. This is easy, but how to mention where the difference exist?

I have two image file in bmp file format. How to convert them into string and to check if they are differnt or same. If different how to mention or find that where the difference exists. This idea have to be extented with video application as well.

Hi,
if you have vision, you could use the functin IMAQ Image to Array to have a 2D array of the pixel values.
You can then compare pixel by pixel; if your images come from a camera, I would recommend to set a treshold of acceptance.
This is a time consuming solution anyway.
Alternative methods:
1) Make a subtraction of the two images, the resulting image will be the difference of them
2 ) Use IMAQ LogDiff function (operators palette)
3) Calculate the histogram of both image and compare the histogram reports
Good luck,
Alberto

100% view while comparing two images

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