some improvments

internal/pdf/model/colorspace.go

@@ -1619,33 +1619,6 @@ func (pc *PdfColorspaceLab) ImageToRGB(img Image) (Image, error) {
 // ICC Based colors.
 // Each component is defined in the range 0.0 - 1.0 where 1.0 is the primary intensity.
 
-/*
-type PdfColorICCBased []float64
-
-func NewPdfColorICCBased(vals []float64) *PdfColorICCBased {
-	color := PdfColorICCBased{}
-	for _, val := range vals {
-		color = append(color, val)
-	}
-	return &color
-}
-
-func (this *PdfColorICCBased) GetNumComponents() int {
-	return len(*this)
-}
-
-// Convert to an integer format.
-func (this *PdfColorICCBased) ToInteger(bits int) []uint32 {
-	maxVal := math.Pow(2, float64(bits)) - 1
-	ints := []uint32{}
-	for _, val := range *this {
-		ints = append(ints, uint32(maxVal*val))
-	}
-
-	return ints
-
-}
-*/
 // See p. 157 for calculations...
 
 // format [/ICCBased stream]

internal/pdf/model/image.go

@@ -157,7 +157,6 @@ func (im *Image) ToGoImage() (goimage.Image, error) {
 	aidx := 0
 
 	samples := im.GetSamples()
-	//bytesPerColor := colorComponents * int(this.BitsPerComponent) / 8
 	bytesPerColor := im.ColorComponents
 	for i := 0; i+bytesPerColor-1 < len(samples); i += bytesPerColor {
 		var c gocolor.Color