3.1 The Holographic Method of Contouring of Static …
213
Fig. 3.16 Example of a moire picture of dorsal human body surface. Reprinted from [94] with
permission
topograms of dorsal body surface of healthy people and of patients with vertebral
deformations. The moiré topogram is presented in Fig. 3.16. It is seen that before
manual therapy treatment the patient had deformation perpendicular to the plane of
the photo-image. Externally, these two photos are almost indistinguishable but the
moiré pattern in Fig. 3.16 has high frequency along the pectoral and the jugular areas
of the spine that is the indicative of the high gradient of changing of the surface
shape.
This method makes it possible to detect minor vertebral deformations accompanied by local increase of muscle tone and can be used for detection of extremity
deformations. The main advantage of this method along with the simplicity of implementation, high informativity and harmlessness is the possibility of its implementation for detection of dynamics of pathological process and the efficiency of the used
therapeutic complexes [102].
3.1.8 Holographic Method of Surface Relief Contouring
Based on the Change of Polarization State of Objective
Waves
In holographic interferometry, the information about the studied object parameters,
for example, about the surface relief, is contained in phase difference of two object
waves. As two-phase differences identical in the absolute value but opposite in the
sign of function, random under superposition of two coherent waves form two totally
identical interferency patterns, then information about the sign of phase difference
disappears. Thus, the detection of relief change direction and convexity–concavity
of the surface under study is a complex and in some cases unsolvable task.
213
Fig. 3.16 Example of a moire picture of dorsal human body surface. Reprinted from [94] with
permission
topograms of dorsal body surface of healthy people and of patients with vertebral
deformations. The moiré topogram is presented in Fig. 3.16. It is seen that before
manual therapy treatment the patient had deformation perpendicular to the plane of
the photo-image. Externally, these two photos are almost indistinguishable but the
moiré pattern in Fig. 3.16 has high frequency along the pectoral and the jugular areas
of the spine that is the indicative of the high gradient of changing of the surface
shape.
This method makes it possible to detect minor vertebral deformations accompanied by local increase of muscle tone and can be used for detection of extremity
deformations. The main advantage of this method along with the simplicity of implementation, high informativity and harmlessness is the possibility of its implementation for detection of dynamics of pathological process and the efficiency of the used
therapeutic complexes [102].
3.1.8 Holographic Method of Surface Relief Contouring
Based on the Change of Polarization State of Objective
Waves
In holographic interferometry, the information about the studied object parameters,
for example, about the surface relief, is contained in phase difference of two object
waves. As two-phase differences identical in the absolute value but opposite in the
sign of function, random under superposition of two coherent waves form two totally
identical interferency patterns, then information about the sign of phase difference
disappears. Thus, the detection of relief change direction and convexity–concavity
of the surface under study is a complex and in some cases unsolvable task.