ImageDctHashSearchCriteria class Leave feedback
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Represents a search criteria for finding images in a document.
This search criteria uses DCT based perceptual image hash for calculating image similarity. Learn more: https://docs.groupdocs.com/display/watermarknet/Searching+watermarks
The ImageDctHashSearchCriteria type exposes the following members:
| Constructor | Description |
|---|---|
| init | Initializes a new ImageDctHashSearchCriteria instance with a specified file path. |
| init | Initializes a new ImageDctHashSearchCriteria instance with the provided image stream. |
| Method | Description |
|---|---|
| and_ | Combines this SearchCriteria with other criteria using the logical AND operator. (inherited from SearchCriteria) |
| and_search_criteria | (inherited from SearchCriteria) |
| not_ | Negates this SearchCriteria. (inherited from SearchCriteria) |
| or_ | Combines this SearchCriteria with other criteria using the logical OR operator. (inherited from SearchCriteria) |
| or_search_criteria | (inherited from SearchCriteria) |
| Property | Description |
|---|---|
| max_difference | The maximum allowed difference between images. (inherited from ImageSearchCriteria) |
| pages | The list of specific page numbers. (inherited from PageSearchCriteria) |
from groupdocs.watermark import Watermarker
from groupdocs.watermark.search.search_criteria import ImageDctHashSearchCriteria
def clear_image_watermark():
with Watermarker("./watermarked-document.docx") as watermarker:
criteria = ImageDctHashSearchCriteria("./logo.png")
criteria.max_difference = 0.9
possible = watermarker.search(criteria)
for i in range(len(possible) - 1, -1, -1):
watermarker.remove(possible[i])
watermarker.save("./output.docx")
Task guides that use ImageDctHashSearchCriteria:
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