Image type conversion

Hi, How can i use BufferedImage class to perform image type conversion, thanks

I fyou're talking about changing the image encoding, see the documentation for ImageIO.
{color:#0000ff}http://java.sun.com/javase/6/docs/api/javax/imageio/ImageIO.html{color}
Particularly the read and write methods.
If you're talking about changing the BufferedImage.TYPE_xxx, construct a new BI with the same size and drawImage the previous image on it.
If something else, clarify. And next time you ask a question, please try to be clear about your requirements.
luck, db

Similar Messages

Unexpected IMAQ image type conversion indicated

When wiring an Image to an IMAQ "object"/vi (e.g. Write Custom Data, Image Info, Calibration, ...) a type conversion indicator (grey dot) appears whenever the wire starts at a property node.
The conversion indicator doesn't appear when wiring from a local variable or an unbundle "object".
I would expect the value of an image object to behave similarly, regardless whether it is wired from a local variable, unbundle node or property node. Am I getting something wrong, is this a bug, or is there really some data type conversion going on?
Many thanks for all answers
Patrick
Attachments:
strange_image_type_conversion.vi ‏126 KB

The image type is a type def. It appears that the Value returns a non-typedef value. LV shows a conversion dot whenever you change between a non-typedef and typedef variable, even if they are the exact same structure.
Bruce
Bruce Ammons
Ammons Engineering

Automator - Change Image Type - Multiple page PDF- TIFF conversion

I was able to do this on a friend's computer (not sure which version of OS X they were running), but this seems impossible on Snow Leopard.
I need to convert hundreds of multiple page PDFs to TIFFs. I can't get this to work, and the Change Image Type option only lists single page PDF conversion. I could separate PDFs into multiple files, convert to TIFFs, but then I don't know how to recombine a bunch of TIFF pages into a larger file. From google searches, I know this is possible using tiffutil, but I don't really understand how to use that well, and I really need an automatic process.
I'm at my wits end with this, because I did it just last week on someone else's computer and it was easy as pie. Why can't you convert multiple page PDFs in Snow Leopard?
Any ideas?
Thanks!

I just tried this - two problems.
It creates a separate tiff document for each page of the input pdf.
Also, this action is just annoying because it results in randomly named files in some temp folder that i can only locate using the reveal finder item action. I know I can rename files in automator, but I'd really like to have the output file have the same name as the input file.
It confuses me why they would remove this functionality in Snow Leopard.

Grab default image type

I use grab a lot, and i mean a lot, for my blog, and for album art. When I upload pictures to my blog. They only accept jpeg and a couple other image types. Grabs default image type is .tiff. Is there any way to set the default image type to .jpeg?

No. Grab generates tiff files. The Grab help suggests using Preview to open and convert the file types.
There are a number of other image conversion tools out there as well.
You might also try CMD-SHIFT-4 - this permits you to select a portion of your screen and saves it a .png file. Most modern servers understand png.

LabWindows/CVI and IMAQ - Invalid Image Type when saving bitmap

I create and image, grab it, then display it, but when I go to save it using imaqWriteBMPFile, I get an error that maps to Invalid Image Type, so I use imaqCast to cast it to an IMAQ_IMAGE_U8 type (which is what the orignal image was created as), then it works, except that my image has changed, that looks like the contrast or something has changed. Any suggestions?
Attachments:
image.bmp ‏302 KB

What kind of camera & IMAQ board are you using? I have seen similar problems when a 12 bit camera is used. The image is acquired as a 16 bit image, and if you just convert it to an 8 bit image, it ends up looking like the one you attached. To correctly convert to 8 bits, you need to shift the appropriate number of bits during the conversion. For a 12 bit camera, that would be 4 bits.
Bruce
Bruce Ammons
Ammons Engineering

From NI's 'Image' type to OpenCV's 'IplImage' type...

Hello,
I am using LabWindows/CVI's 'grab' project. I can grab images from the camera connected to the NI card. How it does this? It does this in the GrabNewImage function:
   myImage = imaqGrab (sid, myImage, FALSE);
   imaqDisplayImage (myImage, 0, 1);
And myImage is declared as an 'Image*' type:
   static Image* myImage = NULL;
I want to call OpenCV functions. But I cannot. I should have an image type of Iplimage*:
How can I convert from 'Image' type to 'Iplimage' type?
What about?
IplImage* frame = 0;frame = cvCreateImage( _size, IPL_DEPTH_8U, 4 );
frame->imageData = myImage*;
Will it work?
Thank you so much!!
Message Edited by kbv2842 on 08-18-2008 02:51 PM

no this assignment will not work, you will need a more advanced conversion.
you can find a pointer to the first pixel of your NI image by calling imaqGetImageInfo(): it is stored in the imageStart member of the structure returned by the function. then you will have to be careful about borders, padding and the likes: a line of pixel is pixelsPerLine wide. you may have a way to specify padding when creating the OpenCV image: after looking quickly to OpenCV documentation, InitImageHeader() is the only function that allows you to specify padding. then you have the problem of datatypes: if you are using 8bit grayscale images then you are fine, but if you are using color images you have to pay attention to the color encoding (rgb, yuv, or other, generally you have an rgb image) and channel ordering (red, green and blue components of an rgb imagemay appear in a different order). now that you are aware of all the peculiarities of image conversion, you can write your conversion (i am confident it will be straighforward). now you have to be careful that OpenCV functions do not reallocate or move the memory block containing the pixel data or you will not be able to use you NI image anymore.
i am confident the conversion function is straighforward: use the cvInitImageHeader function with the right arguments, then set the imageData member of the OpenCV image.

Implicit and explicit Type conversion using Type object in heap

Hi,
I am surprised how Implicit and explicit Type conversion works using Type object in heap. for example when implicit type conversion occur what pointer it returns to object and similarly with explicit type conversion.

Hello,
>> I am surprised how Implicit and explicit Type conversion works using Type object in heap.
For Implicit conversions: Typical examples are conversions from smaller to larger integral types, and conversions from derived classes to base classes. For the first one, the reference would be different which means it would return a different pointer to
a new object. For the reference type, it actually points to the same memory location, you could use the object.ReferenceEquals() to check it.
For Explicit conversions (casts):Typical examples include numeric conversion to a type that has less precision or a smaller range, and conversion of a base-class instance to a derived class. For first one, it would perform the same with implicit conversions.
While for the conversion of conversion of a base-class instance to a derived class, actually, there's no built-in way to do this conversion.
Regards.
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

How do I find the image type of an image file

This was posted on the LabView forum in error yesterday, Please excuse the dual post.
I am trying to open a JPEG image. If I do not know the image type (8U, 16I, GrayscaleSingle, ... etc)... is there a way to find out that information?
If you open the file using IMAQ ReadFile...you have to supply a Create Image input to allocate space...the input specifies a type to read...but if the type of the stored data is not the type specified in the read file you either read the file as the type specified, or the file does not produce any values...(and no error is produced).
Examples:
Store a JPEG as a Single Percision Floating point image.
Use a Creat File to specify that the file is read with the following types...with the following results
Type Specified        Type Read         Resulting image
U8                               U8                     8 bit image appears
16I                               16I
Solved!
Go to Solution.

Hummer1,
There are two methods to accomplish this:
1) IMAQ GetFileInfo, which has quite a few outputs involving the image details.
2) Read JPEG File, which you can unbundle the image data output to get the image depth, or other attributes.
I would reccomend the IMAQ function, due to it being more detailed.
Hope this helps
Chris Van Horn
Applications Engineer

The priority of different data type conversion

Hi All,
I want to know the priority of data type conversion rule. if in an expression, I have several kind of data type( I, P, F,N..).
Then finaly, all the data object will convert to which data type?
I don't know the priority of data conversion.
E.g.   data a type i. data b type p. data c type f.
         a = b + c.
or    data d type p, data e type f.
      if ( d > f ).
Then who will convert to who's type?
Thanks and Regards.
Aaron

For expressions, the right term in SAP is "calculation type", it's explained here : [abap help - determining the calculation type|http://help.sap.com/abapdocu_70/en/ABENARITH_TYPE.htm]. SAP takes the "biggest" type of all variables in the expression. It can be I, P or F (smallest is I, biggest is F).
Conditions are handled differently, just using data type conversion (see link given above by Abhishek), SAP converts from smallest to biggest type (in your case, it converts P to F and compares the two F variables).

Need Help with data type conversion

Hello People,
I am new to java, i need some help with data type conversion:
I have variable(string) storing IP Address
IPAddr="10.10.103.10"
I have to call a library function which passes IP Address and does something and returns me a value.
The problem I have is that external function call in this library excepts IP Address in form of a byte array.
Here is the syntax for the function I am calling through my program
int createDevice (byte[] ipAddress).
now my problem is I don't know how to convert the string IPAddr variable into a byte[] ipAddress to pass it through method.

Class InetAddress has a method
byte[] getAddress() You can create an instance using the static method getByName() providing the IP address string as argument.

How to see all image types when saving an image without selecting "all files"every time

<blockquote>Locking duplicate thread.<br>
Please continue here: [[/questions/951766]]</blockquote>
Hallo, and thank you for reading this.
I am a person who saves a lot of images online and renames them in different folders in different names like B - 34 or G - 56. I have been working with firefox 10 for quite some time and it had a pretty handy bug (I guess) where I could save an image and firefox would just save the image in it's original type (JPEG,PNG etc) while "save as type" was empty.
It also always has shown all the image types in the folder where I save the images (except for GIF) and that helpes me quite a lot by saving me the trouble of selecting "all files" every time I save or going to the folder to rename every image.
Now this seems to be lacking in the newest firefox versions and my question is if I can set firefox to always show me all the image file types when saving an image, instead of only showing JPEG's when I try to save a JPEG.
Thank you for your time.

I suspect this is a Windows problem. I am surmising the FilePicker uses the Operating System or Desktop facilities. Does Windows 7 offer any other file categories like ''images'' ?
I do not normally use Windows 7, but may the option depend upon the directory being an indexed one, I ask after finding this thread ''Bring File types tab back'' [http://www.windows7taskforce.com/view/819]
This question is a duplicate of [/questions/951764]
Normally I would lock the duplicate question, but in this instance I will leave it open as it is unanswered and someone may give a better reply.

How to set a uniform display size of multiple intermedia image types - wher

I have read "If you want to limit the size of the file that can be uploaded, you can do this as a post generation
step, by adding the maxFileSize property to the <controller> element in the struts-config:
This does not address how to limit the *** display size *** where you have multiple intermedia image types - where the original size is not uniform.
If an image is uploaded where the true image display size is 1024 x 768 - it will display that way in the table/table-form. This will create un-even display size's where previous images sizes where different 384 x 384 and so on.
Is there a way to encode the display size so that *** ALL *** images regardless of their true size are displayed uniformly at least on one dimension (64 x ???)? This is possible when using products such as Dreamweaver or Flash.
BTW - JHS/***JDev*** synergy is truely magnificient!!! Way-To-Go Oracle!!!!!!!!!!! Keep it up!!!!
BG...

Bill,
I did some tests, and was able to reproduce it. The problem is that JHeadstart distinguishes between display types fileDownload and image, but UIX uses the same <media> tag to handle both display types. It will look at runtime whether it must render a hyperlink to download the document, or to render it right away as an image.
To get all images the same size, you can set the display width and height, AND the display type must be set to image.
However, to get the file name used as download link, you must set the FileName attribute AND the display type must be set to "fileDownload" ..
So, to solve your problem, it is easiest to set the displayType to "fileDownload" and set the width and height properties post-generation in the generated UIX page.
In the next release of Jheadstart, we will fix this, and always pick up width, height and fileName settings regardless of the display type.
Note that you should also set the FileName property against the attribute you are using to upload the file.
Steven Davelaar,
JHeadstart Team.

Changing Image type stored in BLOB

Hi All,
Please let me know how to change the Image type already stored in a table as a BLOB datatype. The Images have been uploaded as .TIFF format into the table's BLOB data type.
Now We need to update/change the .TIFF images to .JPG.
Is there any tool, utility to update the Table column's (BLOB) image type. We have thousands of records where we need to do this operation.
Please guide.
Regards,
Snehangsu

Hi Trinoy,
Could you find a solution for the above problem?
We also have similar scenario and would be really interested to know about this.
-Vinay

Invalid data type conversions

what are the invalid data type conversions in ABAP ???
Moderator message: please search for available information/documentation.
Edited by: Thomas Zloch on Mar 10, 2012 6:01 PM

No Amanda,
The values that I see in message monitor are also those that comes to XSLT programs as input.
I investigated our problem a little further myself:
1) XI always converts messages into XML format - this everybody knows.
2) In XI documentation it is declared that XI uses ISO 8601 for DATE type formatting. That's why you see dates in format YYYY-MM-DD in XML data in message monitoring.
3) The appearance of those decimal values are not that obvious for me. If XI uses ABAP transformation for message content then applies the rules for converting ABAP data types into XML. For this there is a SAP document 'ABAP - XML mapping' from TechEd2004. This document seems to describe how ABAP data types are handled by XML transformation.
Anyway, we currently need to play with decimal values in XSLT mapping programs inside XI:
a) add leading 0 integer if source value < 1
RFC returns 0.123 -> XI converts to XML '.123' -> XSLT mapper should return '0.123' ->SOAP response returns '0.123'
b) add decimal point and trailing zeros
RFC returns 0.000 -> XI converts to XML '0' -> XSLT mapper should return '0.000' ->SOAP response return '0.000'
With dates, the problem is actually on documenting mapping rules when writing interface specifications. If you would write an EAI-solution-independent conversion rule (RFC/date->SOAP/char) for date field it could sound like: YYYYMMDD -> dd.mm.yyyy. This works semantically between these systems but would not work for XI-developer, because he get YYYY-MM-DD from the RFC.
Additionally the decimal type conversion requirements in XSLT mapping programs probably only applies XI and are therefore not reusable in other EAI environments.
I would be glad if somebody would still have further comments for this data type conversion issue.
br: Kimmo

Import IMAGE type from SQL Server to BLOB in Oracle

Hello,
Is there a way to import a IMAGE type from SQL Server to BLOB type in Oracle from one table to another through a database link?
I'm waiting for an answer as soon as possible.
Best regards,
Florin
Edited by: Florin Manole on Sep 10, 2008 11:53 AM

Have you already configured a Heterogeneous Services and Generic Connectivity to create a database link from Oracle to SQL Server? I haven't tried copying IMAGE data from SQL Server via Heterogeous Services myself, but from the [data type map|http://download.oracle.com/docs/cd/B19306_01/server.102/b14232/apb.htm#sthref509] in the documentation, I would expect that it would work so long as the SQL Server ODBC driver maps the IMAGE data type to SQL_LONGVARBINARY
Justin

Image type conversion

Similar Messages

Maybe you are looking for