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endmember collection - endmember spectra

Spanish translation: ver abajo

10:41 May 24, 2000
English to Spanish translations [PRO]
Tech/Engineering
English term or phrase: endmember collection - endmember spectra
"Use endmember collection to select endmember spectra from many words for use in classification and advanced spectral analysis techniques."
Com. Nac. Act. Esp. (CONAE)
Spanish translation:ver abajo
Explanation:
¡Qué pregunta más difícil! Encontré una definición clara de endmemeber (o más bien end member) en el diccionario Harcout: end member Mineralogy. any of the two or more chemical compounds that make up an isomorphous (solid solution) series. Esa definición no es la que buscas ya que end member (lo encontré junto, seperado y con guión) es algo así como "componente" en una técnica de percepción remota que se llama "análisis hiperespectral avanzado" incluso encontre un "tutorial" para aprender a utilizar un programa que hace ese análisis pero definitivamente está fuera de mi alcance. Este es un párrafo de lo más accesible que encontré: Spectral mixture analysis has a complex history in remote sensing and analytical spectroscopy (Adams et al., 1991), but we restrict our discussion to efforts to interpret multispectral images as mixtures of surface materials (e.g., vegetation and soils) and processes (e.g., illumination, atmospheric effects, and instrument calibration) within a single analytical framework (e.g., Adams et al., 1986, 1989, 1992; Gillespie et al., 1990a; Roberts et al., 1990; Sabol et al., 1990; Smith et al., 1990 a,b). This analysis assumes that the pixel spectra that make up an image are composed of mixtures of the spectra of several dominant scene components (Fig. 19.3). SMA transforms the pixel-to-pixel spectral variability of images into concentrations of reference "end members." The reference end members are the reflectance spectra of materials (e.g., plant organs, litter, soils, rocks collected from the site or from similar ecosystems) measured under specified conditions. The methods used to define the number and types of end members vary with the application, but include statistical procedures (e.g., factor analysis) to identify the intrinsic dimensionality of the data, or specification of materials of known interest. The selected end members must be distinct and have spectra that are not reproduced by mixtures of the other end members in the scene. The criteria for selecting the set of end members are (1) that the set accounts for the image spectral variability and (2) that the set produces end member concentrations within physically realistic limits (i.e., between 0 and 100%).

No me atrevo a dar una traducción, es un término demasiado específico, mejor consulta a un experto en percepción remota.

Mucha suerte.
Selected response from:

Gerardo Ferrer-Sueta
Local time: 13:56
Grading comment
The answer was extremely helpful; I found the system excellent and as a result I have already become a member of the Techtranslation subcommunity. I hope to be able to render the same assistance to my colleagues sometime.

4 KudoZ points were awarded for this answer



Summary of answers provided
naPodrías dar un poco más de contexto?
Patricia Lutteral
naver abajo
Gerardo Ferrer-Sueta


  

Answers


4 hrs
Podrías dar un poco más de contexto?


Explanation:
Si el texto trata sobre análisis espectrográficos para estudios del habla, tal vez puedan aclararte el término técnico en la Sociedad Argentina de Lingüística. En este contexto, el "spectrum"(espectro) se refiere a los valores de amplitud y frecuencia que tiene cada sonido.
Suerte.


Patricia Lutteral
Argentina
Local time: 13:56
Native speaker of: Spanish
PRO pts in pair: 1564
Login to enter a peer comment (or grade)

1 day 14 mins
ver abajo


Explanation:
¡Qué pregunta más difícil! Encontré una definición clara de endmemeber (o más bien end member) en el diccionario Harcout: end member Mineralogy. any of the two or more chemical compounds that make up an isomorphous (solid solution) series. Esa definición no es la que buscas ya que end member (lo encontré junto, seperado y con guión) es algo así como "componente" en una técnica de percepción remota que se llama "análisis hiperespectral avanzado" incluso encontre un "tutorial" para aprender a utilizar un programa que hace ese análisis pero definitivamente está fuera de mi alcance. Este es un párrafo de lo más accesible que encontré: Spectral mixture analysis has a complex history in remote sensing and analytical spectroscopy (Adams et al., 1991), but we restrict our discussion to efforts to interpret multispectral images as mixtures of surface materials (e.g., vegetation and soils) and processes (e.g., illumination, atmospheric effects, and instrument calibration) within a single analytical framework (e.g., Adams et al., 1986, 1989, 1992; Gillespie et al., 1990a; Roberts et al., 1990; Sabol et al., 1990; Smith et al., 1990 a,b). This analysis assumes that the pixel spectra that make up an image are composed of mixtures of the spectra of several dominant scene components (Fig. 19.3). SMA transforms the pixel-to-pixel spectral variability of images into concentrations of reference "end members." The reference end members are the reflectance spectra of materials (e.g., plant organs, litter, soils, rocks collected from the site or from similar ecosystems) measured under specified conditions. The methods used to define the number and types of end members vary with the application, but include statistical procedures (e.g., factor analysis) to identify the intrinsic dimensionality of the data, or specification of materials of known interest. The selected end members must be distinct and have spectra that are not reproduced by mixtures of the other end members in the scene. The criteria for selecting the set of end members are (1) that the set accounts for the image spectral variability and (2) that the set produces end member concentrations within physically realistic limits (i.e., between 0 and 100%).

No me atrevo a dar una traducción, es un término demasiado específico, mejor consulta a un experto en percepción remota.

Mucha suerte.


    www.envi-sw.com/tut11.htm#MNF Transform Data, Endmembers, and Spectral Unmixing
    Reference: http://cstars.ucdavis.edu/papers/sustin/ecomodel97/ecmodelsm...
Gerardo Ferrer-Sueta
Local time: 13:56
Native speaker of: Native in SpanishSpanish
PRO pts in pair: 245
Grading comment
The answer was extremely helpful; I found the system excellent and as a result I have already become a member of the Techtranslation subcommunity. I hope to be able to render the same assistance to my colleagues sometime.
Login to enter a peer comment (or grade)



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