How does PDF manage bitmap images?

Answer 1

PDF manages bitmap images and object images differently based on their nature and intended use within the document. Here's an overview of how PDF handles both types of images:

Bitmap Images:

Compression: PDF supports various compression methods like JPEG, JPEG 2000, and Flate to reduce the size of bitmap images within the document.

Resolution: Bitmap images in PDF can have different resolutions for screen viewing (lower resolution) and printing (higher resolution), allowing for optimized file sizes without compromising quality.

Color Space: PDF supports various color spaces for bitmap images, such as RGB, CMYK, and grayscale, ensuring accurate color representation.

Clipping and Masking: PDF allows for clipping and masking of bitmap images, enabling precise control over their visibility and appearance within the document.

Object Images:

Vector Graphics: Object images in PDF are typically vector-based, described using mathematical equations and geometric shapes rather than pixels.

Scalability: Object images can be scaled to any size without loss of quality since they are not based on fixed pixel dimensions.

Text and Graphics Integration: PDF allows object images to be seamlessly integrated with text and other graphics elements within the document.

Interactivity: Object images can be interactive, such as clickable buttons or links, enhancing the user experience in interactive PDFs.

In summary, PDF manages bitmap images through compression, resolution control, color space management, and clipping/masking capabilities, while object images are handled as vector graphics with scalability, integration with text/graphics, and potential for interactivity.

Answer 2

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