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- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg((((3333)))) IIIImmmmaaaaggggeeeeVVVViiiissssiiiioooonnnn LLLLiiiibbbbrrrraaaarrrryyyy CCCC++++++++ RRRReeeeffffeeeerrrreeeennnncccceeee MMMMaaaannnnuuuuaaaallll iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg((((3333))))
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- NNNNAAAAMMMMEEEE
- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg - compute the spectrum of a fourier domain image
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- IIIINNNNHHHHEEEERRRRIIIITTTTSSSS FFFFRRRROOOOMMMM
- ilLink : ilImage : ilCacheImg : ilMemCacheImg : ilOpImg : ilMonadicImg
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- HHHHEEEEAAAADDDDEEEERRRR FFFFIIIILLLLEEEE
- #include <il/ilFSpectImg.h>
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- CCCCLLLLAAAASSSSSSSS DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg() computes the spectrum of a complex fourier domain image. It
- is publicly derived from ilMonadicImg and is one of the Fourier
- operators. The computation is the same as that performed in ilFMagImg(),
- but the difference is in the size and origin of the output. The size of
- the output is the same as the size of the original image and its origin
- is at its center.
-
- All four quadrants are represented. Since this represents the fourier
- transform of a real image, the magnitude or spectrum is conjugate
- symmetric. Conjugate symmetric means that quadrant 2 is a reflection of
- quadrant 0 and quadrant 1 is a reflection of quadrant 3.
-
- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg() is more suited for display, while ilFMagImg() might be more
- suitable for frequency domain computation. Both require scaling of the
- spectral values to suit the display, which can be done using
- ilHistScaleImg().
-
- In this class, the pagesize is set equal to the size of the source image.
- So the cache needs to be big enough to hold the entire image. For
- multichanneled images, the cache needs to be big enough to hold just one
- channel, since the spectrum is computed one channel at a time.
-
- The source image for this operator should have the same format as that
- produced by a forward 2D-FFT.
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- CCCCLLLLAAAASSSSSSSS MMMMEEEEMMMMBBBBEEEERRRR FFFFUUUUNNNNCCCCTTTTIIIIOOOONNNN SSSSUUUUMMMMMMMMAAAARRRRYYYY
- CCCCoooonnnnssssttttrrrruuuuccccttttoooorrrr
-
- ilFSpectImg(ilImage *src=NULL)
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- FFFFUUUUNNNNCCCCTTTTIIIIOOOONNNN DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNNSSSS
- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg(((())))
-
- ilFSpectImg(ilImage *src=NULL)
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- Constructor for this class. _s_r_c is the source image whose spectrum
- is to be computed. _s_r_c should have the same format as that produced
- by a forward 2D-FFT.
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- PPPPaaaaggggeeee 1111
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- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg((((3333)))) IIIImmmmaaaaggggeeeeVVVViiiissssiiiioooonnnn LLLLiiiibbbbrrrraaaarrrryyyy CCCC++++++++ RRRReeeeffffeeeerrrreeeennnncccceeee MMMMaaaannnnuuuuaaaallll iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg((((3333))))
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- IIIINNNNHHHHEEEERRRRIIIITTTTEEEEDDDD MMMMEEEEMMMMBBBBEEEERRRR FFFFUUUUNNNNCCCCTTTTIIIIOOOONNNNSSSS
- IIIInnnnhhhheeeerrrriiiitttteeeedddd ffffrrrroooommmm iiiillllMMMMoooonnnnaaaaddddiiiiccccIIIImmmmgggg
- calcPage(), getOffset(), getPage(), resetOp(), setOffset()
- ilMondadicImgGetOffset(), ilMondadicImgSetOffset()
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- IIIInnnnhhhheeeerrrriiiitttteeeedddd ffffrrrroooommmm iiiillllOOOOppppIIIImmmmgggg
- checkMinMax(), clearClamp(), getBias(), getClamp(), getInputMax(),
- getInputMin(), getInputScaleMax(), getInputScaleMin(), getValidOrders(),
- getValidTypes(), isClamped(), isDiff(), isPrecisionKept(),
- keepPrecision(), resetOp(), setBias(), setClamp(), setMaxPageSize(),
- setMinPageSize(), setValidOrder(), setValidType(), setWorkingType()
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- IIIInnnnhhhheeeerrrriiiitttteeeedddd ffffrrrroooommmm iiiillllMMMMeeeemmmmCCCCaaaacccchhhheeeeIIIImmmmgggg
- allocPage(), doUserPageAlloc(), enableMP(), executeRequest(),
- finishRequest(), freePage(), getGlobalThrashMode(), getMpRequest(),
- getPage(), getPageAllocTime(), getPageTime(), getRetainMode(),
- getRetainPath(), getThrashMode(), getThrashTime(), getTotalPageTime(),
- isMPenabled(), isUserPageAlloc(), prepareRequest(),
- setGlobalThrashMode(), setPage(), setPageAllocTime(), setRetainMode(),
- setRetainPath(), setThrashMode(),
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- IIIInnnnhhhheeeerrrriiiitttteeeedddd ffffrrrroooommmm iiiillllCCCCaaaacccchhhheeeeIIIImmmmgggg
- enablePagingCallback(), flush(), getCacheSize(),
- isPagingCallbackEnabled(), listResident()
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- IIIInnnnhhhheeeerrrriiiitttteeeedddd ffffrrrroooommmm iiiillllIIIImmmmaaaaggggeeee
- addInput(), allocFillData(), checkColorModel(), checkValidOrder(),
- checkValidType(), clipTile(), configureRetainedCache(), copy(),
- copyTile(), copyTile3D(), copyTileCfg(), fillTile(), fillTile3D(),
- fillTileRGB(), freeFillData(), getColorImg(), getColorModel(),
- getColormap(), getCompression(), getConfig(), getCopyConverter(),
- getCsize(), getDataType(), getDimensions(), getDirectInput(),
- getDisplayCacheEnable(), getFill(), getFillData(), getFillValue(),
- getHeight(), getHwEnable(), getHwHint(), getHwIntHint(), getHwOp(),
- getHwPassTable(), getInput(), getInputTileRequirement(),
- getLockTileSet(), getMaxColormapLevels(), getMaxValue(), getMinValue(),
- getNumChans(), getNumInputs(), getOrder(), getOrientation(),
- getPageBorder(), getPageBorderX(), getPageBorderY(), getPageBorderZ(),
- getPageCounts(), getPageDelta(), getPageDimensions(), getPageIndices(),
- getPageOrigin(), getPageOriginC(), getPageOriginX(), getPageOriginY(),
- getPageOriginZ(), getPageSize(), getPageSizeC(), getPageSizePix(),
- getPageSizeVal(), getPageSizeX(), getPageSizeY(), getPageSizeZ(),
- getPixel(), getPixel3D(), getPriority(), getScaleMax(), getScaleMin(),
- getSize(), getStrides(), getSubTile(), getSubTile3D(), getTile(),
- getTile3D(), getWidth(), getXsize(), getYsize(), getZsize(),
- hasPageBorder(), hasPages(), hwDefine(), hwGetPass(), inherit(),
- initColorModel(), initHwEnable(), initMinMax(), initPageSize(),
- initScaleMinMax(), isColorImg(), isIntegral(), isMirrorOrientation(),
- isPartialPage(), isSigned(), isValidPage(), isWritable(), lockPage(),
- lockPageSet(), lockTile(), lockTile3D(), mapFlipTrans(), mapFromInput(),
- mapFromSource(), mapOrientation(), mapSize(), mapTile(), mapToInput(),
- mapToSource(), mapXY(), mapXYSign(), outOfBound(), qCopyTileCfg(),
-
-
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- PPPPaaaaggggeeee 2222
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- iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg((((3333)))) IIIImmmmaaaaggggeeeeVVVViiiissssiiiioooonnnn LLLLiiiibbbbrrrraaaarrrryyyy CCCC++++++++ RRRReeeeffffeeeerrrreeeennnncccceeee MMMMaaaannnnuuuuaaaallll iiiillllFFFFSSSSppppeeeeccccttttIIIImmmmgggg((((3333))))
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-
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- qFillTile3D(), qFillTileRGB(), qGetSubTile3D(), qGetTile3D(),
- qLockPageSet(), qSetSubTile3D(), qSetTile3D(), removeHwHint(),
- removeInput(), reset(), setColorModel(), setColormap(), setCompression(),
- setCsize(), setDataType(), setDisplayCacheEnable(), setFill(),
- setFillValue(), setHwEnable(), setHwHint(), setHwIntHint(), setInput(),
- setMaxColormapLevels(), setMaxValue(), setMinValue(), setNumChans(),
- setNumInputs(), setOrder(), setOrientation(), setPageBorder(),
- setPageSize(), setPageSizeC(), setPageSizeZ(), setPixel(), setPixel3D(),
- setPriority(), setScaleMinMax(), setScaleType(), setSize(), setSubTile(),
- setSubTile3D(), setTile(), setTile3D(), setTileRequirementFunction(),
- setWritable(), setXsize(), setYsize(), setZsize(), unlockPage(),
- unlockPageSet()
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- IIIInnnnhhhheeeerrrriiiitttteeeedddd ffffrrrroooommmm iiiillllLLLLiiiinnnnkkkk
- addResetCallback(), alterAction(), anyAltered(), clearAllowed(),
- clearSet(), clearStatus(), deleteRelated(), disableAltered(),
- dumpChain(), getClassPropSet(), getDescription(), getDirectParent(),
- getDisabledIndex(), getFloatProp(), getGenerationID(), getIntProp(),
- getMaxIndex(), getMinIndex(), getNumChildren(), getNumParents(),
- getParent(), getProp(), getProp(), getPropSet(), getPtrProp(),
- getRelatedChild(), getRelatedDelete(), getRelatedType(), getStatus(),
- hasResetCallbacks(), ilGetClassPropSet(), inProgress(), isAllowed(),
- isAltered(), isEnabled(), isRelated(), isSet(), markSet(), mpUnlock(),
- neverReset(), newRelatedType(), removeParent(), removeProp(),
- removeResetCallback(), reset(), resetAltered(), resetCheck(),
- setAllowed(), setAltered(), setDescription(), setDisabledIndex(),
- setEnabled(), setParent(), setProp(), setPropAltered(),
- setRelatedDelete(), setRelatedType(), setStatus(), stopWatching(),
- unalterable(), watch(), watchNotify()
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- ilRFFTfImg, ilRFFTiImg, ilOpImg, ilMonadicImg
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- NNNNOOOOTTTTEEEESSSS
- The magnitude of a complex number (a + ib) equals sqrt(a*a + b*b).
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- PPPPaaaaggggeeee 3333
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