Databases
StackOverflow2013
Postsdbo
POMemory overflow exception when creating bitmaps in a loop
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POMemory overflow exception when creating bitmaps in a loop
    primarykey
    data
    text
    <p>I have to import a large amount of image crops off of many images that are all ready stored in my database. I have tried using statements and disposing of my bitmap objects each time. But I am still getting a Memory Overflow Exception that my system is out of memory.</p> <p>Here is some sample code of what I am doing.</p> <pre><code>public void CropImage(List&lt;ImageClass&gt; data) { foreach (var obj in data) { //I have a data base method that returns a data object that //contains the file bytes of the image id in data: 'file' //My List&lt;ImageClass&gt; data contains an ID of the original image //start x,y coords for the upper left corner of the rectangle, //and the width and height of the rectangle. Image img = Image.FromStream(new MemoryStream(file.Data)); Bitmap bmp = new Bitmap((Bitmap)img); Rectangle cropArea = new Rectangle(obj.x_coordinate, obj.y_coordinate, obj.width, obj.height); Bitmap cropImage = bmp.Clone(cropArea, bmp.PixelFormat); SaveFile(cropImage, file, obj.scanID); img.Dispose(); bmp.Dispose(); cropImage.Dispose(); } } public void SaveFile(Bitmap cropImage, FileData file, int OCRscanID) { EncoderParameters encoderParams = new EncoderParameters(); encoderParams.Param[0] = new EncoderParameter( System.Drawing.Imaging.Encoder.Quality, 50L); ImageCodecInfo codecInfo = GetEncoderInfo("image/jpeg"); MemoryStream newImage = new MemoryStream(); cropImage.Save(newImage, codecInfo, encoderParams); byte[] newData = newImage.ToArray(); //Saving data bytes to database of the cropped image } private ImageCodecInfo GetEncoderInfo(string mimeType) { int j; ImageCodecInfo[] encoders; encoders = ImageCodecInfo.GetImageEncoders(); for (j = 0; j &lt; encoders.Length; ++j) { if (encoders[j].MimeType == mimeType) return encoders[j]; } return null; } </code></pre> <p>I know I can trim up some of the code like searching for an encoder to just use the image/jpeg. But i had another application for this code another project. I just can't seem to get past the memory overflow.</p> <p>I need to cycle through about 20k images.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USTshepang
    1. USTom
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COWait.. you aren't keeping the bitmap images as binary on SQL server, do you?
      singulars
      1. POMemory overflow exception when creating bitmaps in a loop
      1. USCan Poyrazoğlu
    2. COhave you tried a profiling tool, such as memprofiler?
      singulars
      1. POMemory overflow exception when creating bitmaps in a loop
      1. USMitch Wheat
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload