Wavelet transforms on vector spaces as a method of multispectral image characterisation

Watson, Graham H.; Watson, Sharon K.

doi:10.1049/ip-vis:19971116

Cited by 4 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A repeating pattern of a dot printed fabric is relatively large and the centroid position of a pattern element will not be accurate due to the accuracy of printing or the tension and layout during the scanning of the printed fabric, so the centroid of pattern elements 16,17 and 18 is not exactly in the same line as the centroid of pattern elements 12,17 and 22, which causes the calculation results of the angles mentioned above. Four repeating patterns of pattern elements (11,12,16,17), (12,13,17,18) (16,17,21,22) and (17,18,22,23) were obtained. The repeating pattern color image position was marked in Figure 6(b) by using the centroid position of pattern elements 8, 7, 11 and 12 and it is segmented, as shown in Figure 6(f).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Image database of printed fabric with repeating dot patterns part (I) – image archiving

Kuo

Lee

Shih

2016

Textile Research Journal

View full text Add to dashboard Cite

An image database of printed fabrics with repeating dot patterns was created to alleviate issues associated with management of and searches for numerous dot printed fabrics in the printing industry. The function of the database is to archive and allow retrieval of images. First, we discuss image archiving of repeating pattern-based dot printed fabrics. The color image was scanned by resolution of 200 dpi. The wavelet transformation was used to preprocess the image to obtain a scanned image 1/16 of the size of the original to be the stored image. To acquire images with repeating pattern color and repeating pattern template, the binary image of each pattern was obtained using the Sobel edge detection method and a morphological operation. Then pattern elements identical to the target pattern element were screened out. Afterwards, the centroid positions of these identical pattern elements were used to subdivide the repeating pattern color image and repeating pattern template image using a vertical vector method. Finally, the RGB 512-color histogram was used as the color feature of the dot printed fabrics, and the geometric and moment invariant feature values of the repeating pattern template image were used as the pattern feature of the dot printed fabrics. Our experimental results show that images can be acquired that are suitable for use in a dot printed fabric image database. The color and template images of the repeating patterns, which represent the image content of the printed fabrics, were obtained to create an image database of repeating pattern-based dot printed fabrics. This image database contains data on 300 printed fabrics which can be used for subsequent research on database image retrieval.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The wavelet transformation was derived from wavelet analysis and the wavelet analysis can be traced back to the wavelet orthonormal basis proposed by Haar in 1910. 17,18 3. The decreasing color image was converted into gray level and then the pattern boundary was detected by Sobel edge detection.…”

Section: Methodsmentioning

confidence: 99%