Automatically assessing fabric smoothness grade is very important in the evaluation of fabric appearance.A system for objectively evaluating the fabric smoothness grade based on a grating projection unit and double co...Automatically assessing fabric smoothness grade is very important in the evaluation of fabric appearance.A system for objectively evaluating the fabric smoothness grade based on a grating projection unit and double colored CCD(short form of charge coupled device) was constructed in this paper.Two images captured by different CCD compensated each other which reduced the influence of noises.The application of the four-step phase-shifting method enabled the calculation of the exact phase in a point easy and quick.A large amount of 3D points with three coordinates X,Y and Z were obtained precisely making the definition and calculation of fabric smoothness characters easy.Then four parameters which intuitively denoted the fabric smoothness degree were obtained.Finally,a proper neural network was built,which successfully performed the fabric smoothness classification.The experimental results show that the system is applicable for all the fabric whatever pattern or color.The experimental grades provided by this grating projection system are also highly consistent with the subjective results.展开更多
CCD (cleidocranial dysplasia) is a kind of rare congenital skeletal dysplasia and deformity. It has rare clinical syndrome, such as forehead radius, small maxilla ofa cial, wide long distance eye, collapse nose, wid...CCD (cleidocranial dysplasia) is a kind of rare congenital skeletal dysplasia and deformity. It has rare clinical syndrome, such as forehead radius, small maxilla ofa cial, wide long distance eye, collapse nose, widening cranial suture, incompleted closure of the frontal, clavicle hypoplasia, increased range of shoulder motion and other abnormalities. Often accompanied by teeth hypoplasia or impacted, through a careful observation of the clinical morphology, case history and X-ray examination can confirm the diagnosis.展开更多
文摘Automatically assessing fabric smoothness grade is very important in the evaluation of fabric appearance.A system for objectively evaluating the fabric smoothness grade based on a grating projection unit and double colored CCD(short form of charge coupled device) was constructed in this paper.Two images captured by different CCD compensated each other which reduced the influence of noises.The application of the four-step phase-shifting method enabled the calculation of the exact phase in a point easy and quick.A large amount of 3D points with three coordinates X,Y and Z were obtained precisely making the definition and calculation of fabric smoothness characters easy.Then four parameters which intuitively denoted the fabric smoothness degree were obtained.Finally,a proper neural network was built,which successfully performed the fabric smoothness classification.The experimental results show that the system is applicable for all the fabric whatever pattern or color.The experimental grades provided by this grating projection system are also highly consistent with the subjective results.
文摘CCD (cleidocranial dysplasia) is a kind of rare congenital skeletal dysplasia and deformity. It has rare clinical syndrome, such as forehead radius, small maxilla ofa cial, wide long distance eye, collapse nose, widening cranial suture, incompleted closure of the frontal, clavicle hypoplasia, increased range of shoulder motion and other abnormalities. Often accompanied by teeth hypoplasia or impacted, through a careful observation of the clinical morphology, case history and X-ray examination can confirm the diagnosis.