I am using Pattern matching using vision assistant . its able to detect the temple which created while configuration

Hi all ,
i am using vision assistant to do patten matching . its able to find the pattern with created template in vision assistant .
if i load some other pattern is not detecting ..
i have attached my vi file
Attachments:
PM_light.vi ‏266 KB

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Who knows how to output some text once labview detects something I want using pattern matching(Vision assistant)?

who knows how to output some text once labview detects something I want using pattern matching(Vision assistant)?
The text is something like"Yes, this is a coin"
Thanks!

I attached a SubVI which I used to place an overlay next to a Pattern, found by a Pattern Match before:
As you can see, you simply pass the image reference and the Array of Matches to the VI along with the String you want to have as an overlay next to the Match.
I also modified your VI a bit, but didn't test it. I created an Array of clusters, each elment containing the template path along with the respective text.
Please note that this is just a hint!
Christian
Attachments:
suggestion.vi ‏146 KB
Overlay_Txt.vi ‏24 KB

How can I define a non-rectangular (eg. circular) ROI for pattern matching using IMAQ?

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Hello,
The current pattern matching algorithm requires a rectangular ROI. See the IMAQ Vision Concepts manual for detailed info on how the algorithm works.
Regards,
Yusuf C.
Applications Engineering
National Instruments

Pattern matching using Regular expression

Hi,
I am working on pattern matching using regular expression. I the table, I have 2 columns A and B
A has value 'A499BPAU4A32A386KBCZ4C13C41D20E'
B has value like '*CZ4*M11*7NQ+RDR+RSM-R9A-R9B'
the requirement is that I have to match the columns of B in A. If there is a value with * sign, this must be present in A like 'CZ4' should exit in string A.
The issue I am facing is that there are 2 values with * sign. The code works fine for first match (CZ4) but it does not look further as M11 does not exist in A.
I used the condition
AND instr(A,substr(REGEXP_SUBSTR(B, '*[^*]{3}'),2) ,1)=0
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If yes, please suggest.
Thanks

user2544469 wrote:
Thanks a lot Frank. This query worked wonderful for the test data I have provided however I have some concerns:
- query doesnot include the column BOOK which is a mandatory check.Sorry, that was my mistake. It was a very easy mistake to make, since you posted sample data where it didn't matter. Instead of doing a cross-join between vn and got_must_have_cnt, do an inner join, using book. That means book will have to be in got_must_have_cnt, and all the sub-queries from which it descends. Look for comments that say "March 22".
If you want to treat '+' in test_cat.codes as '*', then the simplest thing is probably just to use REPLACE, so that when the table has '+', you use '*' instead.
WITH     got_token_cnt     AS
     SELECT     cat
     ,     book                                        -- Added March 22
     ,     REPLACE (codes, '+', '*') AS codes                    -- If desired. Changed March 22
     ,     LENGTH (codes) - LENGTH ( TRANSLATE ( codes
                                                   , 'x*+-'
                                  , 'x'
                         ) AS token_cnt
     FROM    test_cat
,     cntr     AS
     SELECT     LEVEL     AS n
     FROM     ( SELECT MAX (token_cnt)     AS max_token_cnt
             FROM        got_token_cnt
     CONNECT BY     LEVEL     <= max_token_cnt
,     got_tokens     AS
     SELECT     t.cat
     ,     t.book                                        -- Added March 22
     ,     REGEXP_SUBSTR ( t.codes
                     , '[*+-]'
                     , 1
                     , c.n
                     )          AS token_type
     ,     SUBSTR ( REGEXP_SUBSTR ( t.codes
                                   , '[*+-][^*+-]*'
                           , 1
                           , c.n
               , 2
               )          AS token
     FROM     got_token_cnt     t
     JOIN     cntr          c ON     c.n     <= t.token_cnt
,     got_must_have_cnt     AS
     SELECT       cat, book                                   -- Changed March 22
     ,       COUNT (CASE WHEN token_type = '*' THEN 1 END) AS must_have_cnt
     FROM       got_tokens
     GROUP BY cat, book                                   -- Changed March 22
SELECT       mh.cat
,       vn.vn_no
FROM       got_must_have_cnt     mh
JOIN                    vn ON mh.book     = vn.book               -- Changed March 22
LEFT OUTER JOIN      got_tokens     gt ON     mh.cat                  = gt.cat
                                 AND INSTR (vn.codes, gt.token) > 1
GROUP BY mh.cat
,            mh.must_have_cnt
,            vn.vn_no
HAVING       COUNT (CASE WHEN gt.token_type = '*' THEN 1 END)     = mh.must_have_cnt
AND       COUNT (CASE WHEN gt.token_type = '-' THEN 1 END)     = 0
ORDER BY mh.cat
- query is very slow with 60000 records in vn table. Cost is somewhere around 36000.See these threads:
When your query takes too long ...
HOW TO: Post a SQL statement tuning request - template posting
Relational databases were designed to have (at most) one piece of information in each column. If you decide to have multiple items in the same column (as you have a variable number of tokens in the codes column), don't be surprised if that makes things slower and more complicated. Most of the query I posted, and perhaps most of the time needed, is jsut to normalize the data. If you stored the data in a narmalized form, perhaps something like got_tokens, then you wouldn't need the first 3 sub-queries that I posted.
Edited by: Frank Kulash on Mar 22, 2011 12:04 PM

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只有Pattern Matching的
http://zone.ni.com/devzone/cda/epd/p/id/5594
或是參考Vision Assistant裡面的Print Circuit Board Inspection這個Solution
如果要有Mask就只能參考剛剛那個連結了。

Pattern Matching and Vision Builder 6.0

Hi,
When I select a ROI from an image to generate a pattern matching, Builder
saves it as a PNG file.
If I open this pattern in other application (Paint Shop Pro 7) to modified
it and save as a PNG file, after I can't open this file as a pattern into
Builder, because it is considered as a not valid PNG file.
I have tested this case in LabView 6.i and this problem doesn't appear.
Any solution? Thanks.

When the template is first saved in Vision Builder, pattern matching information is stored in the header of the PNG file. This information lets LabVIEW and Vision Builder know how the template was learned. Paint Shop Pro does not keep this information in the file whenever it is saved so Vision Builder will not recognize it as a valid pattern matching template.
Jack Arnold
Application Engineer
National Instruments

I am using Pattern matching using vision assistant . its able to detect the temple which created while configuration

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