| T O P I C R E V I E W |
| Dany |
Posted - Jul 04 2018 : 08:41:43
Hello!
I am really new in images processing so very sorry if this is to basic question. I am adding a collection of images from any source in a ImageEnMView but I want to insert each image pre-processed in the same way as WhatsApp does. For example, the two attached files, ORIGINAL is the one I catched with cell camera, and RESAMPLED is the result of sendig ORIGINAL via WhatsApp. It changed from 2MB to 100KB but if I print RESAMPLE I get an acceptable quality for reading, and full proportional.
I have to insert each image into the collection with the minor possible size but with acceptable printing quality and full proportional. Is it good example for doing this?
Thank you! |
| 8 L A T E S T R E P L I E S (Newest First) |
| xequte |
Posted - Jul 16 2018 : 01:47:44
Hi Dany
OnImageAdded is not called for loading of individual frames of an image, but we will address that for 8.0.2. It is is called *after* the insertion into TImageEnMView, but from a performance perspective (as the image is already loaded into the bitmap) it should not make any difference if you use "GetBitmap" to modify the added bitmap.
Nigel
Xequte Software
www.imageen.com
|
| w2m |
Posted - Jul 13 2018 : 14:13:11
If I knew how to do that I would have done so. In looking over the events in the help file I can not determine if there is an event that executes before the bitmap is added. I may have missed something, so have a look for yourself.
Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development |
| Dany |
Posted - Jul 13 2018 : 14:01:49
Many thaks for your example Bill, and very sorry for asking again but what I am searchig for is which is the unique point (if any) in where I can process any image that is added to ImageEnMView, regardless the procedure used for adding it. For example, you can insert images doing ImgNavigate.MIO.LoadFromFile(..) or doing ImgNavigate.MIO.LoadFromFileTIFF(..) or doing ImgNavigate.MIO.Acquire; in all the cases (I guess) the component will add one by one, the images that are comming from each source. Do we have at that point an oportunity to process each one just before? (very sorry for my poor english !!!). |
| w2m |
Posted - Jul 13 2018 : 11:12:23
procedure TForm1.Open1Click(Sender: TObject);
var
iImageENIO: TImageEnIO;
iIEBitmap: TIEBitmap;
begin
if OpenPictureDialog1.Execute then
begin
iImageENIO := TImageEnIO.Create(Self);
try
iIEBitmap := TIEBitmap.Create;
try
iImageENIO.AttachedIEBitmap := iIEBitmap;
{ Load the bitmap}
iImageENIO.LoadFromFile(OpenPictureDialog1.FileName);
{ Resample the bitmap }
iIEBitmap.Resample(1000, 1000, rfLanczos3, True, True);
{ Add the bitmap }
ImageEnMView1.AppendImage(iIEBitmap);
StatusBar1.Panels[0].Text :=
ExtractFileDir(OpenPictureDialog1.FileName);
StatusBar1.Panels[1].Text :=
ExtractFileName(OpenPictureDialog1.FileName);
StatusBar1.Panels[2].Text := 'Width: ' + IntToStr(iIEBitmap.Width);
StatusBar1.Panels[3].Text := 'Height: ' + IntToStr(iIEBitmap.Height);
finally
iIEBitmap.Free;
end;
finally
iImageENIO.Free;
end;
end;
end;
Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development |
| Dany |
Posted - Jul 12 2018 : 13:52:24
Yes I saw it, but it is giving an index as the only one parameter, so is "after" the image was added. I mean, for example if I load from a TIFF that has lots of images, may I process each one just before it will be added to the component? |
| w2m |
Posted - Jul 12 2018 : 09:35:18
TImageEnMView.OnImageAdded
Declaration
property OnImageAdded: TIEMViewImageNotifyEvent;
Description
Occurs whenever an image has been added to the control.
Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development |
| Dany |
Posted - Jul 12 2018 : 09:16:54
Thank you!. I see there are more than one way for adding images on a TImageEnMView component (e.g. loading a snapshot, loading a file, etc etc); is there a unique instance in where we can process each image (for resampling) just before it is added (regardless the way images are being added)? |
| xequte |
Posted - Jul 04 2018 : 21:42:03
You can use Resample to proportionally reduce the size of images:
https://www.imageen.com/help/TImageEnProc.Resample.html
// Resize the image so that it is no higher or wider than 1000px, but maintains the original aspect ratio (e.g. a 4:3 portrait image would have the new dimensions 100 x 75)
ImageEnView1.Proc.Resample(1000, 1000, rfLanczos3, True);
Nigel
Xequte Software
www.imageen.com |
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