Acd Systems International Inc.

Acd Systems, Ltd.

David Sheldon Hooper

Yida Mao

Matthew Stanlake

A method for contrast enhancement for digital images, including filtering an original image having original color values, to generate a filtered image, receiving parameters for a response curve, the response curve being a function of color value that is user-adjustable, deriving local multipliers by applying the response curve to the filtered image, multiplying the original color values by the local multipliers, thereby generating a contrast-enhanced image from the original image. A system and a computer-readable storage medium are also described.

Image contrast enhancement

A method for contrast enhancement for digital images, including filtering an original image having original color values, to generate a first filtered image corresponding to bright color values, and a second filtered image corresponding to dark color values, deriving local highlight multipliers by applying a highlight response curve to the first filtered image, the highlight response curve being a function of color value that increases from a response value of one, corresponding to a color value of zero, to a response value greater than one, corresponding to a maximum color value, deriving local shadow multipliers by applying a shadow response curve to the second filtered image, the shadow response curve being a function of color value that decreases from a response value greater than one, corresponding to a color value of zero, to a response value of one, corresponding to a maximum color value, deriving local offset values by applying an offset curve to the first filtered image, and processing the original image, including subtracting the local offset values from the original color values to generate shifted color values, multiplying the shifted color values by the local highlight multipliers, and further multiplying the shifted color values by the local shadow multipliers, thereby generating a contrast-enhanced image from the original image. A system and a computer-readable storage medium are also described.

A system for operation and visualization of multiple content filters, including a plurality of filter interfaces for setting parameters of corresponding content filters that filter a catalog of assets, each content filter having a lock status being in a locked or an unlocked state, and each filter interface having a display generator for rendering a user interface display, wherein at least one such user interface display for a content filter is dependent upon the lock status of another content filter, and a lock processor for setting the lock status of at least one content filter. A method and a computer readable storage medium are also described and claimed.

Method and system for visualization and operation of multiple content filters

A calendar-based image asset organizer, including a user interface for designating at least one date range, an image date reader for determining a date associated with an image, and an image query manager for identifying images having an associated date within the designated at least one date range. A method and a computer readable storage medium are also described and claimed.

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Victoria, Canada

David Sheldon Hooper