Compressing images in Tiger

Sometimes I need to fax images, and in these times I would need to compress my images before I fax them. Back in February my car got damaged, and I needed to get quotes from body shops. Only 1 of these body shops had email access, but all of them had fax machines. I did fax the images, and it took 20-30 minutes to fax 2-3 pictures from my then 2.1MP camera. I now own a Kodak 4.0MP camera, and I usually set it to 1.1MP for shots, but still that res is too much for faxing.
So how can I decompress images in Tiger?
Digital cameras these days are overkill for the average consumer that does not print out posters.
John

So how can I decompress images in Tiger?
I'd like to note here that your terminology is incorrect. You are not interested in "decompressing" images, from the sounds of it. Compression refers to the act of using some algorithm to reduce the number of bytes needed to store a given amount of data. What you want is to reduce the resolution, and for that there are a number of solutions. GraphicConverter (shareware), Photoshop or Photoshop Elements (commercial) and many other editors will do this for you. If you want a free option and have X11 installed on your computer, Gimp (http://gimp-app.sourceforge.net/) is a good choice that does as much as Photoshop.
Digital cameras these days are overkill for the
average consumer that does not print out posters.
Well, if you don't want the image quality, buy a cheaper digital camera, rather than paying more for a higher-resolution camera. However, if you think 4 megapixels is such "overkill" that only people who print posters need it, you obviously haven't ever tried printing a poster from a 4 megapixel image. You wouldn't meet with much success, unless you're not picky about quality.

Similar Messages

How to show a compressed image in the report?

Hi
I have created a new report.what i do in application is i compress the image and save it in database.now i need to retrieve the compressed image and display in the report. I have used the following code to decompress the binary data save in the image.I
dont know after that what should i do. Please help me to show the picture in SSRS Report. I need to show picture in many reports.one of my doubt is how to call this function in SSRS Report. The function accepts input as byte but in database the column in varbinary.
should i convert the input type of function to varbinary instead of byte array? Please help me.
Public Function Decompress(ByVal arr As Byte()) As Byte()
Dim notCompressed As Boolean
notCompressed = False
Dim MS As MemoryStream
MS = New MemoryStream()
MS.Write(arr, 0, arr.Length)
MS.Position = 0
Dim stream As GZipStream
stream = New GZipStream(MS, CompressionMode.Decompress)
Dim temp As MemoryStream
temp = New MemoryStream()
Dim buffer As Byte() = New Byte(4096) {}
While (True)
Try
Dim read As Integer
read = stream.Read(buffer, 0, buffer.Length)
If (read <= 0) Then
Exit While
Else
temp.Write(buffer, 0, buffer.Length)
End If
Catch ex As Exception
notCompressed = True
Exit While
End Try
End While
If (notCompressed = True) Then
stream.Close()
Return temp.ToArray()
Else
Return temp.ToArray()
End If
End Function
Thanks & Regards Manoj

Please try this
Public Function Decompress(ByVal arr As Byte()) As Byte()
Dim s As Byte()
Dim notCompressed As Boolean
notCompressed = False
Dim MS As System.IO.MemoryStream
MS = New System.IO.MemoryStream()
MS.Write(arr, 0, arr.Length)
MS.Position = 0
Dim stream As System.IO.Compression.GZipStream
stream = New System.IO.Compression.GZipStream(MS, System.IO.Compression.CompressionMode.Decompress)
Dim temp As System.IO.MemoryStream
temp = New System.IO.MemoryStream()
Dim buffer As Byte() = New Byte(4096) {}
While (True)
Try
Dim read As Integer
read = stream.Read(buffer, 0, buffer.Length)
If (read <= 0) Then
Exit While
Else
temp.Write(buffer, 0, buffer.Length)
End If
Catch ex As Exception
notCompressed = True
Exit While
End Try
End While
If (notCompressed = True) Then
stream.Close()
Return temp.ToArray()
Else
Return temp.ToArray()
End If
End Function
Thanks & Regards Manoj

"Compress images in pdf documents" won't work

I created this workflow:
1. Get selected Finder objects
2. Compress images in pdf documents
3. Copy Finder objects to...
... but it won't work, the images are not compressed. Anyone any suggestions?

To examine this I made three pdf documents from three Pages documents (running compression during export to pdf) each containing one image: one psd, one tiff and one jpg image. Running the workflow on these pdfs, the pdfs containing the psd and the tiff files were compressed but not the pdf containing the jpg image. I then made two pdf documents exported from Indesign containing a tiff file; one pdf export compressing and downsampling the tiff image and one with no downsampling and compression. Running the workflow on these two pdfs did not further compress the already compressed pdf, but did compress the pdf containing the uncompressed image. To further optimize pdf documents already compressed on export from Indesign one has to use Acrobat, which, of course, is the most efficient and flexible tool for optimizing pdf documents.

Some of Photo (JPEG)-compressed images by Flash Pro are not shown in AIR app (3.7/3.8)

Does anyone see this issue happening? In Flash Pro it's OK, but in AIR, it's broken.
https://bugbase.adobe.com/index.cfm?event=bug&id=3558175
Problem Description:
Some JPEG-compressed images in swc produced by Flash Pro CS6 is not shown in AIR.
Steps to Reproduce:
1. Create a fla with Flash Pro CS6
2. Put a png image in it and open the property of the image to make sure its compression option is Photo (JPEG)
3. Produce an swc out of the fla
4. Create an AIR app that shows the contents in the swc
Actual Result:
All images are shown
Expected Result:
Some of the images are not shown (nothing is shown where they are supposed to be)
Any Workarounds:
Use Lossless (PNG/GIF) for all images

i was able to get it to work from a suggestion in another thread: if you write a JSFL that goes through all your bitmaps and makes sure they do not uset he default compression of the document, but instead use custom compression (it can match the default however). this worked for me

A Fast way to display compressed images?

Hi,
I currently working on iPhone and trying to display (home-made) compressed images in an UIImageView : it is updated as soon as I have finished building the new one. I already do it with raw (BMP) images but I use them at 2D GLTextures that I found faster than the use of an UIImageView.
To update the view with compressed images, I do:
//member in .h
UIImage * myImage;
UIImageView * MyImgView;
// In .m
-(void)UpdateImageWithData :(NSData *) p_Data
myImage = [UIImage imageWithData:p_Data];
MyImgView.image = myImage;
This works quite well, but I encounter a major drawback for me : the frame rate of this is never better than 10 fps. I build my images faster that 25 per second, but cannot display them that fast.
I tried to change compression quality and compression methods (PNG interlaced or not, JPEG (411, 421, 444, varying quality from 10 to 100%), etc.) but I always have the same frame rate. So, I am assuming that the max frame rate you can have with an UIImageView is limiter whatever the format is.
Now, I am wondering a few things :
- Am I right about this limitation or do you see any flaw in my discussion?
- Is there some way to 'accelerate' the rendering with an UIMageView?
- Is there another faster way to display compressed images (or at least any kind of JPEG images)
- Is there a (fast) way with UIKit (or any compatible lib) to retrieve the raw image so that I can use my first method and display it as a 2D OpenGL Texture?
- Since from one image to the other only a few changes occur, do you see any way to update only what actually changed in order to save some CPU?
- Do you think that the problem about UIImageView frame refreshement rate is linked with the iPhone Video Processor or with its CPU? (thus the new 3GS may help me solve this problem)
Thank your for reading this untill the end.

Hey, guess what, I had pretty much this same exact problem. Client wanted full screen 30 fps animation. Here's what I found experimenting with full screen sizes:
- Whether you use UIImageView conveniences, or load and draw yourself in a UIView subclass, makes no apparent difference.
- If you're doing basic Quartz drawing, never a problem keeping 30 fps up.
- But as soon as you change the image in a UIImageView, or draw it with CGContextDrawImage() yourself in a UIView, then the frame rate plummets to about 10 fps on an iPod touch 1G, or 20-25 on an iPhone 3GS.
For my purposes most of the full screen animation could be put into movies, and the motion clipped down to manageable sections in the interactive portions (and anyway, the fps doesn't really matter for those background bits). If it's not for you, then I guess you need to go down to OpenGL and see how that works out.

How to compress image size?

Hi,
Is there any way to compress image size in iphone? Actually my application is uploding images to server from phone. It takes long time to upload the original image. So if I can compress or convert to thumbnail, it'll help me out.
thanks

I got the answer use UIImageJPEGRepresentation(image, compressionQuality) to compress the image.

Compress image in keynote for iOS

how do i compress image in keynote for iOS? anyone has any idea?
i have added a few image taken from my new iPad and the keynote became such large file size that iCloud takes ages to upload. Hence i am looking for ways to compress each image in every slide to a lower resolution so as i could email my keynote to my colleagues too.
Anyone knows the how to or workaround?

I think I just found out what is wrong with the file sizes of KeyNote for iOS. In the Mac version of this app, there is a preference setting called "Copy theme images into document" which if checked includes about 7 MB of images for every theme used in the presentation(!). Normally this setting is kept off (thank god). However, in the iOS version of KeyNote, there is no such setting. Instead, that function is always ON(!!!). This means that every time you create a presentation in there, or edit one from the Mac version, it will grow by N times 7 MB, where N is the number of themes used in your presentation. Now, if you store your presentations on iCloud — like a good user should — then every single file will be sure to explode in size. And consequently take forever to upload and download from the cloud :-(
Any solution, anybody?

How to compress images to video?

Hi All,
I generate 15 images every second, and I want to make it into a video
stream and send it to someone else through network.
To elaborate: I have a Frame window and I want to show the other person
what is happening on the window. So I capure image of window 15 times
in a second and want to convert to video stream, send to other person, and the
want the other person to view the video.
Can someone give me an idea how can I achieve this..
Thanks,
Shrish
PS: There is "video compression manager" in windows API to compress image
data for use in an AVI file
(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_video_compression_manager.asp)
Is there something similar in java?

I don't know what is an API key.
However in the context of visual Net you can create very simple a thumbnail.
Be aware this method seems to be to extract a thumbnail. But it is not, it simply creates one.
https://msdn.microsoft.com/en-us/library/system.drawing.image.getthumbnailimage(v=vs.110).aspx
Success
Cor

How to compress image to running in slideshow

How to compress image to running in slideshowss image to running in slideshow
My website: http://ketoanthuedoanhnghiep.com
I'm set up a slideshow with two slide with Image. But I don't know how to compress this image. It's too large. My website running very slowly.
please help

I got the answer use UIImageJPEGRepresentation(image, compressionQuality) to compress the image.

Compressed Image Trasfer

Hiho,
although I have read through the various JMF examples, I am still somewhat undecied what the best options for my particular problem are and would therefore like to ask for advice.
I have an image source (8bit greyscale images of defined size) that is updated arbitrarily. I am notified when a change occurs and can read the raw image into memory.
Now instead of sending that raw image directly over a tcp-connection to the receiver, I have to preserve bandwidth as much as possible. While it would be possible to use a simple JPEG compression, the images, I acquire always look very similar and a frame based video codec would deliver way better compression ratios using intermediate frames.
I have already realized such a project using C and Video for Windows, but now need to turn to java. On the encoder side I could call a native library via JNI, but on the decoder side it absolutely must be platform independent (Windows, Linux, Mac at least) and must be runnable as an applet.
My questions now are:
1.) which codec to use to achive the above feats?
2.) use JMF or directly call a library with JNI on the encoder side?
3.) could someone perhaps supply some code snippets if he has some experience with similar projects?
Before the question arises: The protocol is pretty much set - i can just change the format of the compressed image data field in the protocol. So using RTP is out of question.
Best regards
RestlessOne

Hi Stephen, I was having the same problem when I exported a slideshow from iPhoto as a Quicktime movie and then imported it into iMovie. I think the problem is that the slideshow exports as 720x480 but the iMovie (and iDVD?) are 630x480 so it squeezes the larger image into the smaller frame. I have Adobe AfterEffects which I used to crop off the edges of the 720 movie and then it looked okay in iMovie. I don't know how I would have fixed it without this. I have Final Cut Express which I presume could have done something similar but if you don't have some secondary editing program I don't know how you can fix it. I don't know what Apple fixed as the earlier poster mentioned.
iMac G3 500Mhz Mac OS X (10.4.2)
iMac G3 500Mhz Mac OS X (10.3.9)

Is O2 using a proxy and compressing images?

If I view sites or images in some apps using 3G the images are very compressed and full of artefact.
I assume they must be using some kind of proxy server that compresses images to reduce bandwidth.
Anyone else or just me?

My vodafone 3g usb dongle does the same.
I read a few threads about the place which suggest O2 users are stuck with it on what is effectively PAYG (even 30 day recurring), whereas contract users can alter settings to get proper images.
The heavy compression is not acceptable for use on the device like an iPad, so if O2 can't sort this out I may well change to 3 - good to hear you get good speeds with them and uncompressed images.
I think concerned UK O2 iPad users should vote with their feet if support queries can't help.
Compression might be fine for some people, all we need is the choice, after all we're paying for a given data usage, so if we use more it'd generate more revenue for O2.

How does the TIFF format compress images?

When we choose "File> Save As" to save an image to a TIFF file, a TIFF Options dialogue box appears with 4 image compression options( None, LZW, Zip, Jpeg). What is this for? Does the TIFF format compress images? Are they destructive to the image quality? THANK YOU

If you select no compression, it will take up too much space, guaranteed. TIFF lets you pick any compression method supported by your program and the viewing program. Some are lossy, some are lossless. Most TIFFs tend to be compressed in LZW or ZIP, both of which are lossless. You can also choose to compress your TIFF using JPEG compression, which is lossy, but I can't imagine why you would do this instead of simply saving as a JPEG file, which is more likely to be properly opened in browsers than a JPEG-compressed TIFF file.
And in response to one of the previous posts, not all compression throws away details from your file. Only lossy compression (e.g., JPEG, or in the music area MP3) throws away data. The lossless compression techniques simply encode the data in fewer bits if possible. (One important fact not relevant to the web, where you will use 8-bit-per-channel files: If your photos are 16-bit-per-channel, don't save in LZW compressed format; they will actually become larger than the uncompressed image.) For a simplified example, if there is a series of 16 pixels of solid white, a losslessly compressed image will have code that says, in effect, 16 pixels of (255,255,255) using an abbreviated code instead of simply listing (255,255,255) sixteen times. It builds up a directory of byte combinations and can use just a few bytes to refer to many bytes of image data. Because the coding and decoding is exact, there is no change in the image data when it's opened.
JPEG is a lossy compression technique that doesn't actually record pixel values at all. It uses formulas to specify averages and changes within regions. In effect, it records the fact that a given group of pixels has values centered on X color, and that the upper left is much pinker and the lower right is much greener than the average. When you pick the degree of quality for JPEG compression, you tell it how small to make the comparison cells. As you can imagine, if the image has text, tree branches, or other highly contrasty subject matter, this will cause serious weirdness if the comparison cells aren't very small (i.e., you don't have the quality set to max).

PB G4 1ghz, 17", core image support, Tiger?

Hi,
Does the PB G4 1ghz, 17", support core image in Tiger?
It has 64MB of DDR, nVidia GeForce4 440 Go
Thanks...

It doesn't look like it:
Core Image-capable graphics cards include:
* ATI Mobility Radeon 9700
* ATI Radeon 9550, 9650, 9600, 9600 XT, 9800 XT, X800 XT
* nVidia GeForce FX Go 5200
* nVidia GeForce FX 5200 Ultra
* nVidia GeForce 6800 Ultra DDL, 6800 GT DDL
http://www.apple.com/macosx/features/coreimage/

Errors when trying to mosaic compressed images

I am trying to load georaster data into Oracle 11g 11.2.0.2. I was successful then doing this by using the following steps:-
- SDO_GEOR.IMPORTFROM
- sdo_geor.mosaic
However when I try to compress the images as JPEG-B I get an Oracle error when performing the mosaic operation.
ORA-13485: error occurred during compression or decompression: lossy then something related to colormaps.
Has anyone ever seen a similar error.
These are the scripts.
set serveroutput on size 1000000;
set timing on;
LOAD
-- THE SDO_RASTER TABLE HAS TO BE UNIQUE IN THE ENTIRE DATABASE
DROP TABLE GEO_25K PURGE;
DROP TABLE RDT_25K PURGE;
CREATE TABLE GEO_25K ( ID NUMBER PRIMARY KEY,
     SOURCE_FILE VARCHAR2(80),
     DESCRIPTION VARCHAR2(32),
     GEOMMBR SDO_GEOMETRY,
     GEORASTER SDO_GEORASTER);
CREATE TABLE RDT_25K OF SDO_RASTER
     (PRIMARY KEY (RASTERID, PYRAMIDLEVEL, BANDBLOCKNUMBER, ROWBLOCKNUMBER, COLUMNBLOCKNUMBER))
     LOB(RASTERBLOCK) STORE AS (NOCACHE NOLOGGING);
CALL SDO_GEOR_UTL.CREATEDMLTRIGGER('GEO_25K','GEORASTER');
-- IMPORTFROM DOES NOT SUPPORT JPG ONLY TIFF, GIF, BMP AND PNG
-- SET TIMING ON IN SQLPLUS TO SEE HOW LONG THE LOAD TAKES
-- 28 X JPG CONVERTED TO TIFF REPRESENTS 1.93GB ON DISK AND 2286MB IN THE DB AND TOOK 1 HOUR 11 MINUTES TO LOAD
DECLARE
     TYPE FILE_LIST IS TABLE OF VARCHAR2(200);
     files FILE_LIST;
     geor MDSYS.SDO_GEORASTER;
BEGIN
     dbms_java.set_output(1000000);
     get_dir_list('/PRLR01/fssa01/RASTER/LOAD/');
     FOR i in ( SELECT rownum,FILENAME from dir_list where FILENAME like '%TIF' )
     LOOP
          dbms_output.put_line(i.FILENAME);
          dbms_output.put_line(SUBSTR(i.filename, 1, LENGTH(i.filename)-4) || '.TFW');
          INSERT INTO GEO_25K VALUES (i.rownum, i.filename, '', null, MDSYS.SDO_GEOR.INIT('RDT_25K', i.rownum));
          SELECT GEORASTER INTO geor FROM GEO_25K WHERE ID = i.rownum FOR UPDATE;
          MDSYS.SDO_GEOR.IMPORTFROM(geor, 'compression=JPEG-B', 'TIFF', 'FILE', i.FILENAME,
               'WORLDFILE', 'FILE', SUBSTR(i.filename, 1, LENGTH(i.filename)-4) || '.TFW');
          UPDATE GEO_25K SET GEORASTER = geor WHERE ID = i.rownum;
          SELECT GEORASTER INTO geor FROM GEO_25K WHERE ID = i.rownum FOR UPDATE;
          MDSYS.SDO_GEOR.SETRASTERTYPE(geor, 21001);
          UPDATE GEO_25K SET GEORASTER = geor WHERE ID = i.rownum;
          SELECT georaster INTO geor FROM GEO_25K WHERE id = i.rownum FOR UPDATE;
          sdo_geor.setModelSRID(geor, 81989);
          UPDATE GEO_25K SET georaster = geor WHERE id=i.rownum;
     END LOOP;
     COMMIT;
END;
MOSAIC
set timing on;
--After the GeoRaster are loaded you may want to set the appropriate SRID if this was not set correctly.
--SELECT sdo_geor.validateBlockMBR(georaster), id FROM GEO_25K;
--select id, sdo_geor.getModelSRID(georaster) from GEO_25K;
--Then you need to validate the GeoRasters to see if they have been setup correctly.
--SELECT t.id, sdo_geor.validategeoraster(t.georaster) isvalid from GEO_25K t order by id;
--After you have loaded all the georasters, iSMART will pick up each row of the georaster as an individual layer so you need to create a mosaic layer or table
drop table GEO_MOSAIC_25K;
drop table RDT_MOSAIC_25K;
CREATE TABLE GEO_MOSAIC_25K ( ID NUMBER PRIMARY KEY,
SOURCE_FILE VARCHAR2(80),
DESCRIPTION VARCHAR2(32),
GEOMMBR SDO_GEOMETRY,
GEORASTER SDO_GEORASTER);
CREATE TABLE RDT_MOSAIC_25K OF SDO_RASTER
(PRIMARY KEY (RASTERID, PYRAMIDLEVEL, BANDBLOCKNUMBER, ROWBLOCKNUMBER, COLUMNBLOCKNUMBER))
LOB(RASTERBLOCK) STORE AS (NOCACHE NOLOGGING);
call sdo_geor_utl.createDMLTrigger('GEO_MOSAIC_25K','GEORASTER');
DECLARE
gr sdo_georaster;
BEGIN
insert into GEO_MOSAIC_25K (id, georaster)
values (1, sdo_geor.init('RDT_MOSAIC_25K'))
returning georaster INTO gr;
sdo_geor.mosaic('GEO_25K', 'georaster', gr, '');
update GEO_MOSAIC_25K SET georaster=gr where id=1;
commit;
END;
--Then you need to validate the mosaic.
-- SELECT sdo_geor.validateBlockMBR(georaster), id FROM GEO_MOSAIC_25K;
SELECT t.id, sdo_geor.validategeoraster(t.georaster) isvalid from GEO_MOSAIC_25K t order by id;
--The in order to achieve real performance you need to pyramid the mosaic raster. If you don't specify a pyramid level then you oracle will calculate it.
--If you have set them max resolution to this layer using the Oracle calculated value will produce too many pyramid levels, you need to calculate how many pyramid value you will need
--See URL for Pyramiding http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28398/geor_intro.htm#CHDDEGJJ
DECLARE
gr sdo_georaster;
BEGIN
SELECT georaster INTO gr
FROM GEO_MOSAIC_25K WHERE id = 1 FOR UPDATE;
-- Generate pyramids.
sdo_geor.generatePyramid(gr, 'rLevel=5, resampling=NN');
-- Update the original GeoRaster object.
UPDATE GEO_MOSAIC_25K SET georaster = gr WHERE id = 1;
COMMIT;
END;
quit
These work fine until I include 'compression=JPEG-B'
Cheers,
David

Check document:
1.10.2 DEFLATE Compression of GeoRaster Objects
DEFLATE compression compresses objects according to the Deflate Compressed Data Format Specification (Network Working Group RFC 1951), and it stores the compressed data in ZLIB format, as described in the ZLIB Compressed Data Format Specification (Network Working Group RFC 1950). The ZLIB header and checksum fields are included in the compressed GeoRaster object.
Although DEFLATE compression is supported for GeoRaster objects of any size, the total size (columnsPerBlock * rowsPerBlock * bandsPerBlock * cellDepth / 8) of each block of the GeoRaster object must not exceed 1 gigabyte (GB). For large GeoRaster objects, you can call the SDO_GEOR.changeFormatCopy procedure to block the GeoRaster object into blocks smaller than1 GB, and then compress the GeoRaster object; or you can perform the blocking and compression in the same call to the SDO_GEOR.changeFormatCopy procedure.
Because DEFLATE compression is lossless, compression quality does not apply, and is ignored if it is specified.
compression
Specifies the compression type to be applied to the GeoRaster object. Must be one of the following values: JPEG-B, JPEG-F, DEFLATE, or NONE. (You can use NONE to decompress a compressed GeoRaster object.) If compression is not specified, the compression type of the source GeoRaster object is used. For more information about compression and decompression, see Section 1.10. Example: compression=DEFLATE

Best practice for compressing images to uniform size?

What would be an effective method of compressing all the images (JPEG) used by an application to a uniform contentLength?
Initial thought is to generate a new copy using processCopy with successively smaller integer values for compressionQuality (in steps of 5 or 10 say) until a result smaller than the target length is achieved, then replace the original with the first suitable copy.

contentLength is decided by many factors such as height, width, compressionQuality.
If all images have same height and width, changing compressionQuality will help to get expected contentLength. But be care when using too small compressionQuality, which may make image quality poor.
Another way to have uniform contentLength is using TIFF format with NONE compression.

Compressing images in Tiger

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