ImageDctHashSearchCriteria Leave feedback
On this page
Represents a search criteria for finding images in a document.
public class ImageDctHashSearchCriteria : ImageSearchCriteria
| Name | Description |
|---|---|
| ImageDctHashSearchCriteria(Stream) | Initializes a new instance of the ImageDctHashSearchCriteria class with a specified stream. |
| ImageDctHashSearchCriteria(string) | Initializes a new instance of the ImageDctHashSearchCriteria class with a specified file path. |
| Name | Description |
|---|---|
| MaxDifference { get; set; } | Gets or sets maximum allowed difference between images. |
| Pages { get; set; } | Gets or sets the list of specific page numbers |
| Name | Description |
|---|---|
| And(SearchCriteria) | Combines this SearchCriteria with other criteria using logical AND operator. |
| Not() | Negates this SearchCriteria. |
| Or(SearchCriteria) | Combines this SearchCriteria with other criteria using logical OR operator. |
This search criteria uses DCT based perceptual image hash for calculating image similarity. Learn more:
Search for images in the attached files (pdf).
WatermarkerSettings settings = new WatermarkerSettings();
settings.SearchableObjects = new SearchableObjects
{
PdfSearchableObjects = PdfSearchableObjects.All
};
PdfLoadOptions loadOptions = new PdfLoadOptions();
using (Watermarker watermarker = new Watermarker(@"D:\test.pdf", loadOptions, settings))
{
// Specify sample image to compare document images with
ImageSearchCriteria criteria = new ImageDctHashSearchCriteria(@"D:\sample.png");
// Search for similar images
PossibleWatermarkCollection possibleWatermarks = watermarker.Search(criteria);
// Remove or modify found image watermarks
// ...
}
- class ImageSearchCriteria
- namespace GroupDocs.Watermark.Search.SearchCriteria
- assembly GroupDocs.Watermark
Was this page helpful?
Any additional feedback you'd like to share with us?
Please tell us how we can improve this page.
Thank you for your feedback!
We value your opinion. Your feedback will help us improve our documentation.