TIOParams.UpdateEXIFThumbnail
TIOParams.UpdateEXIFThumbnail
Declaration
procedure UpdateEXIFThumbnail(Width: integer = 256; Height: integer = 256; ResampleFilter: TResampleFilter = rfTriangle; MaintainAspectRatio: Boolean = True);
Description
Updates the
EXIF_Bitmap property with the content of current image.
You should call this method just before saving a JPEG so the thumbnail is consistent with the saved image.
Note: This method is only useful for JPEG images. EXIF thumbnails are not saved for other formats
| Parameter | Description |
| Width | Width of the thumbnail |
| Height | Height of the thumbnail |
| ResampleFilter | Interpolation filter to use when resampling |
| MaintainAspectRatio | Automatically reduces Width or Height to ensure the original proportions of the image are maintained |
Note:
◼ EXIF thumbnails are stored in TIFF format (with JPEG compression). There is a 64KB maximum size
◼ The EXIF thumbnail will not be saved if
EXIF_HasEXIFData = False
Example
ImageEnView1.IO.LoadFromFile('C:\input.jpg');
ImageEnView1.Proc.Negative();
ImageEnView1.IO.Params.UpdateEXIFThumbnail;
ImageEnView1.IO.SaveToFile('D:\output.jpg');