Method of automatically producing sketches and cartoon images from movies

A system for generating a sketch image comprising:

• a device to obtain a first image;
• and
• a sketch generator coupled to the device to produce a sketch image based on the first image by performing an adaptive luma chroma difference calculation to find and mark edges of objects in the input image as lines forming objects in the sketch image.

A system for generating a sketch image comprising:

• means for obtaining a first image;
• and
• means for performing an adaptive luma chroma difference calculation to find and mark edges of objects in the first image as lines forming objects in the sketch image.

An apparatus for generating a sketch image comprising:

• a processing unit for executing programming instructions;
• and
• a storage medium having stored therein a plurality of programming instructions to be executed by the processing unit, wherein when executed, the plurality of programming instructions perform an adaptive luma chroma difference calculation to find and mark edges of objects in a first image as lines forming objects in the sketch image.

A machine readable storage medium having stored therein a plurality of machine readable instructions executable by a processor, the machine readable instructions comprising instructions to perform an adaptive luma chroma difference calculation to find and mark edges of objects in a first image as lines forming objects in a sketch image.

An apparatus for automatically generating a sketch image comprising:

• a processing unit for executing programming instructions;
• and
• a storage medium having stored therein a plurality of programming instructions to be executed by the processing unit, wherein when executed, the plurality of programming instructions determine a luma value for each pixel in a first image, determine a luma change threshold for each pixel in the first image, mark edge pixels in the sketch image based on the luma values and luma change thresholds, apply noise reduction to each pixel of the sketch image by an in-place weighted average of neighboring pixels, and color the edge pixels a first color.

A machine readable storage medium having stored therein a plurality of machine readable instructions executable by a processor, the machine readable instructions comprising instructions to determine a luma value for each pixel in a first image, determine a luma change threshold for each pixel in the first image, mark edge pixels in the sketch image based on the luma values and luma change thresholds, apply noise reduction to each pixel of the sketch image by an in-place weighted average of neighboring pixels, and color the edge pixels a first color.