The double-density DWT is an improvement upon the critically sampled DWT with important additional properties: (1) It employs one scaling function and two distinct wavelets, which are designed to be offset from one another by one half, (2) The double-density DWT is overcomplete by a factor of two, and (3) It is nearly shift-invariant. In two dimensions, this transform outperforms the standard DWT in terms of denoising however, there is room for improvement because not all of the wavelets are directional. That is, although the double-density DWT utilizes more wavelets, some lack a dominant spatial orientation, which prevents them from being able to isolate those directions.
標(biāo)簽：
double-density
improvement
additional
critically
上傳時間：
2017-04-03
上傳用戶：dongbaobao
DATAS SEGMENT
w dw 0
keybuf db 255
db 0
db 255 dup(0) ;定義鍵盤輸入需要的緩沖區(qū)
DATAS ENDS
STACKS SEGMENT
db 200 dup(?)
STACKS ENDS
CODES SEGMENT
ASSUME CS:CODES,DS:DATAS,SS:STACKS
START:
MOV AX,DATAS
MOV DS,AX
mov dx,offset keybuf ;用0a號功能，輸入一個字符串
mov ah,0ah ;用回車結(jié)束
int 21h
mov dl,0ah ;再進(jìn)行換行，以便在下一行顯示轉(zhuǎn)換后的字符串
mov ah,2
int 21h
; push ax
; push dx
; mov dl,cl
; mov ah,02
; int 21h
; pop dx
; pop ax
mov bx,offset keybuf+1 ;取出字符串的字符個數(shù)，作為循環(huán)的次數(shù)
mov cl,[bx]
mov ch,0
mov ax,0
again:
inc bx
mov ax,[w]
push bx
mov bx,16
mul bx
pop bx ;是小寫字母，則轉(zhuǎn)換為大寫字母
mov [w],ax
mov dl,[bx] ;取出一個字符，
cmp dl,'9'
jbe lab1
cmp dl,'F'
jbe lab2
sub dl,32
lab2: sub dl ,07h
lab1: sub dl,30h
add [w],dx
loop again
mov ax,[w]
mov bx,-1
push bx
mov bx,10
lab3 :mov dx,0
div bx
push dx
cmp ax,0
jnz lab3
lab5: pop dx
cmp dx,-1
jz lab4
add dl,30h
mov ah,02
int 21h
jmp lab5 ;循環(huán)，處理完整個字符串
lab4: MOV AH,4CH
INT 21H
CODES ENDS
END START
標(biāo)簽：
匯編
上傳時間：
2015-04-02
上傳用戶：wcc0310
