Convolution-Based Edge Detection for Image/Video in Block DCT Domain.
Bo ShenIshwar K. SethiPublished in: J. Vis. Commun. Image Represent. (1996)
Keyphrases
- edge detection
- dct domain
- image blocks
- jpeg images
- multiscale
- dct coefficients
- blocking artifacts
- jpeg compressed images
- pixel domain
- digital video
- image processing
- quantization step
- post processing
- input image
- low pass filtering
- image resizing
- spatial domain
- reference frame
- transform domain
- low frequency
- image classification
- image data
- compressed images
- image features
- similarity measure
- multimedia
- compressed domain
- video transcoding
- discrete cosine transform
- digital images
- motion vectors
- image retrieval
- image segmentation
- key frames
- video streams
- high frequency
- video data
- signal processing
- wavelet transform
- low level
- high resolution
- preprocessing
- video sequences